Vendor comparison
Grey Matters Research vs Priority Peptides
Grey Matters Research is cheaper per mg on 42 of the 42 peptides they share.
Across all 42, Grey Matters Research’s price per mg is a median 60% lower than Priority Peptides’s.
- Listings on the index
- 56
- Cheaper per mg on
- 42 of 42 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 18 Aug 2026
- Listings on the index
- 60
- Cheaper per mg on
- 0 of 42 shared
- Certificates of analysis on file
- none yet
- Ships from
- not stated
- Latest price check
- 5 Nov 2026
Retail 42
Purchases of fewer than 10 vials.
- Adamax
Grey Matters Research
$4.20/mg
10 mg · $42.00
checked 18 Aug 2026
Priority Peptides
$6.50/mg
10 mg · $64.99
checked 5 Nov 2026
Grey Matters Research 35% cheaper
- AOD-9604
Grey Matters Research
$4.00/mg
5 mg · $20.00
checked 18 Aug 2026
Priority Peptides
$6.50/mg
10 mg · $64.99
checked 5 Nov 2026
Grey Matters Research 38% cheaper
- ARA-290
Grey Matters Research
$1.19/mg
16 mg · $19.00
checked 18 Aug 2026
Priority Peptides
$3.67/mg
30 mg · $109.99
checked 5 Nov 2026
Grey Matters Research 68% cheaper
- Cardiogen
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Grey Matters Research 53% cheaper
- Cartalax
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$2.08/mg
60 mg · $124.99
checked 5 Nov 2026
Grey Matters Research 33% cheaper
- CJC-1295 NO DAC
Grey Matters Research
$2.60/mg
10 mg · $26.00
checked 18 Aug 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Grey Matters Research 48% cheaper
- Cortagen
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Grey Matters Research 53% cheaper
- DSIP
Grey Matters Research
$1.90/mg
10 mg · $19.00
checked 18 Aug 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Grey Matters Research 62% cheaper
- Epithalon
Grey Matters Research
$1.10/mg
20 mg · $22.00
checked 18 Aug 2026
Priority Peptides
$2.00/mg
50 mg · $99.99
checked 5 Nov 2026
Grey Matters Research 45% cheaper
- Glutathione
Grey Matters Research
$0.012/mg
1500 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$0.046/mg
1200 mg · $54.99
checked 5 Nov 2026
Grey Matters Research 74% cheaper
- Hexarelin
Grey Matters Research
$3.60/mg
5 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$8.00/mg
5 mg · $39.99
checked 5 Nov 2026
Grey Matters Research 55% cheaper
- Humanin
Grey Matters Research
$2.80/mg
10 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$7.00/mg
10 mg · $69.99
checked 5 Nov 2026
Grey Matters Research 60% cheaper
- Ipamorelin
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Grey Matters Research 64% cheaper
- Kisspeptin
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Priority Peptides
$5.50/mg
10 mg · $54.99
checked 5 Nov 2026
Grey Matters Research 71% cheaper
- KPV
Grey Matters Research
$1.07/mg
30 mg · $32.00
checked 18 Aug 2026
Priority Peptides
$3.33/mg
30 mg · $99.99
checked 5 Nov 2026
Grey Matters Research 68% cheaper
- LL-37
Grey Matters Research
$3.60/mg
5 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$15.00/mg
5 mg · $74.99
checked 5 Nov 2026
Grey Matters Research 76% cheaper
- Melanotan 1
Grey Matters Research
$1.50/mg
10 mg · $15.00
checked 18 Aug 2026
Priority Peptides
$4.00/mg
10 mg · $39.99
checked 5 Nov 2026
Grey Matters Research 62% cheaper
- Melanotan 2
Grey Matters Research
$1.40/mg
10 mg · $14.00
checked 18 Aug 2026
Priority Peptides
$4.00/mg
10 mg · $39.99
checked 5 Nov 2026
Grey Matters Research 65% cheaper
- MOTS-C
Grey Matters Research
$1.00/mg
40 mg · $40.00
checked 18 Aug 2026
Priority Peptides
$3.75/mg
40 mg · $149.99
checked 5 Nov 2026
Grey Matters Research 73% cheaper
- N-Acetyl Selank
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$4.50/mg
10 mg · $44.99
checked 5 Nov 2026
Grey Matters Research 60% cheaper
- N-Acetyl Semax
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$4.50/mg
10 mg · $44.99
checked 5 Nov 2026
Grey Matters Research 60% cheaper
- NAD+
Grey Matters Research
$0.028/mg
1000 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$0.111/mg
1000 mg · $110.99
checked 5 Nov 2026
Grey Matters Research 75% cheaper
- Ovagen
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Grey Matters Research 53% cheaper
- Oxytocin
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Priority Peptides
$9.99/mg
2 mg · $19.99
checked 5 Nov 2026
Grey Matters Research 84% cheaper
- Pancragen
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Grey Matters Research 53% cheaper
- PE-22-28
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Priority Peptides
$5.50/mg
10 mg · $54.99
checked 5 Nov 2026
Grey Matters Research 71% cheaper
- PEG-MGF
Grey Matters Research
$9.00/mg
2 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$22.50/mg
2 mg · $44.99
checked 5 Nov 2026
Grey Matters Research 60% cheaper
- Pinealon
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$3.00/mg
10 mg · $29.99
checked 5 Nov 2026
Grey Matters Research 53% cheaper
- Prostamax
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$2.50/mg
40 mg · $99.99
checked 5 Nov 2026
Grey Matters Research 44% cheaper
- Retatrutide
Grey Matters Research
$1.22/mg
60 mg · $73.00
checked 18 Aug 2026
Priority Peptides
$5.50/mg
50 mg · $275.00
checked 5 Nov 2026
Grey Matters Research 78% cheaper
- Selank
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Priority Peptides
$4.00/mg
10 mg · $39.99
checked 5 Nov 2026
Grey Matters Research 60% cheaper
- Semaglutide
Grey Matters Research
$1.70/mg
10 mg · $17.00
checked 18 Aug 2026
Priority Peptides
$11.30/mg
20 mg · $225.99
checked 5 Nov 2026
Grey Matters Research 85% cheaper
- SNAP-8
Grey Matters Research
$1.00/mg
10 mg · $10.00
checked 18 Aug 2026
Priority Peptides
$3.50/mg
10 mg · $34.99
checked 5 Nov 2026
Grey Matters Research 71% cheaper
- SS-31
Grey Matters Research
$1.16/mg
50 mg · $58.00
checked 18 Aug 2026
Priority Peptides
$2.80/mg
50 mg · $139.99
checked 5 Nov 2026
Grey Matters Research 59% cheaper
- TB-500
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Grey Matters Research 64% cheaper
- Tesamorelin
Grey Matters Research
$2.40/mg
20 mg · $48.00
checked 18 Aug 2026
Priority Peptides
$6.25/mg
20 mg · $124.99
checked 5 Nov 2026
Grey Matters Research 62% cheaper
- Testagen
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Grey Matters Research 53% cheaper
- Thymalin
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Priority Peptides
$4.50/mg
10 mg · $44.99
checked 5 Nov 2026
Grey Matters Research 64% cheaper
- Thymosin Alpha-1
Grey Matters Research
$2.50/mg
10 mg · $25.00
checked 18 Aug 2026
Priority Peptides
$7.50/mg
10 mg · $74.99
checked 5 Nov 2026
Grey Matters Research 67% cheaper
- Vesilute
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Grey Matters Research 53% cheaper
- Vesugen
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$2.08/mg
60 mg · $124.99
checked 5 Nov 2026
Grey Matters Research 33% cheaper
- Vilon
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Priority Peptides
$2.08/mg
60 mg · $124.99
checked 5 Nov 2026
Grey Matters Research 33% cheaper
| Peptide | Grey Matters Research | Priority Peptides | Difference per mg |
|---|---|---|---|
| Adamax | $4.20/mg 10 mg · $42.00 checked 18 Aug 2026 | $6.50/mg 10 mg · $64.99 checked 5 Nov 2026 | Grey Matters Research 35% cheaper |
| AOD-9604 | $4.00/mg 5 mg · $20.00 checked 18 Aug 2026 | $6.50/mg 10 mg · $64.99 checked 5 Nov 2026 | Grey Matters Research 38% cheaper |
| ARA-290 | $1.19/mg 16 mg · $19.00 checked 18 Aug 2026 | $3.67/mg 30 mg · $109.99 checked 5 Nov 2026 | Grey Matters Research 68% cheaper |
| Cardiogen | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Grey Matters Research 53% cheaper |
| Cartalax | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $2.08/mg 60 mg · $124.99 checked 5 Nov 2026 | Grey Matters Research 33% cheaper |
| CJC-1295 NO DAC | $2.60/mg 10 mg · $26.00 checked 18 Aug 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Grey Matters Research 48% cheaper |
| Cortagen | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Grey Matters Research 53% cheaper |
| DSIP | $1.90/mg 10 mg · $19.00 checked 18 Aug 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Grey Matters Research 62% cheaper |
| Epithalon | $1.10/mg 20 mg · $22.00 checked 18 Aug 2026 | $2.00/mg 50 mg · $99.99 checked 5 Nov 2026 | Grey Matters Research 45% cheaper |
| Glutathione | $0.012/mg 1500 mg · $18.00 checked 18 Aug 2026 | $0.046/mg 1200 mg · $54.99 checked 5 Nov 2026 | Grey Matters Research 74% cheaper |
| Hexarelin | $3.60/mg 5 mg · $18.00 checked 18 Aug 2026 | $8.00/mg 5 mg · $39.99 checked 5 Nov 2026 | Grey Matters Research 55% cheaper |
| Humanin | $2.80/mg 10 mg · $28.00 checked 18 Aug 2026 | $7.00/mg 10 mg · $69.99 checked 5 Nov 2026 | Grey Matters Research 60% cheaper |
| Ipamorelin | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Grey Matters Research 64% cheaper |
| Kisspeptin | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | $5.50/mg 10 mg · $54.99 checked 5 Nov 2026 | Grey Matters Research 71% cheaper |
| KPV | $1.07/mg 30 mg · $32.00 checked 18 Aug 2026 | $3.33/mg 30 mg · $99.99 checked 5 Nov 2026 | Grey Matters Research 68% cheaper |
| LL-37 | $3.60/mg 5 mg · $18.00 checked 18 Aug 2026 | $15.00/mg 5 mg · $74.99 checked 5 Nov 2026 | Grey Matters Research 76% cheaper |
| Melanotan 1 | $1.50/mg 10 mg · $15.00 checked 18 Aug 2026 | $4.00/mg 10 mg · $39.99 checked 5 Nov 2026 | Grey Matters Research 62% cheaper |
| Melanotan 2 | $1.40/mg 10 mg · $14.00 checked 18 Aug 2026 | $4.00/mg 10 mg · $39.99 checked 5 Nov 2026 | Grey Matters Research 65% cheaper |
| MOTS-C | $1.00/mg 40 mg · $40.00 checked 18 Aug 2026 | $3.75/mg 40 mg · $149.99 checked 5 Nov 2026 | Grey Matters Research 73% cheaper |
| N-Acetyl Selank | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | $4.50/mg 10 mg · $44.99 checked 5 Nov 2026 | Grey Matters Research 60% cheaper |
| N-Acetyl Semax | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | $4.50/mg 10 mg · $44.99 checked 5 Nov 2026 | Grey Matters Research 60% cheaper |
| NAD+ | $0.028/mg 1000 mg · $28.00 checked 18 Aug 2026 | $0.111/mg 1000 mg · $110.99 checked 5 Nov 2026 | Grey Matters Research 75% cheaper |
| Ovagen | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Grey Matters Research 53% cheaper |
| Oxytocin | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | $9.99/mg 2 mg · $19.99 checked 5 Nov 2026 | Grey Matters Research 84% cheaper |
| Pancragen | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Grey Matters Research 53% cheaper |
| PE-22-28 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | $5.50/mg 10 mg · $54.99 checked 5 Nov 2026 | Grey Matters Research 71% cheaper |
| PEG-MGF | $9.00/mg 2 mg · $18.00 checked 18 Aug 2026 | $22.50/mg 2 mg · $44.99 checked 5 Nov 2026 | Grey Matters Research 60% cheaper |
| Pinealon | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $3.00/mg 10 mg · $29.99 checked 5 Nov 2026 | Grey Matters Research 53% cheaper |
| Prostamax | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $2.50/mg 40 mg · $99.99 checked 5 Nov 2026 | Grey Matters Research 44% cheaper |
| Retatrutide | $1.22/mg 60 mg · $73.00 checked 18 Aug 2026 | $5.50/mg 50 mg · $275.00 checked 5 Nov 2026 | Grey Matters Research 78% cheaper |
| Selank | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | $4.00/mg 10 mg · $39.99 checked 5 Nov 2026 | Grey Matters Research 60% cheaper |
| Semaglutide | $1.70/mg 10 mg · $17.00 checked 18 Aug 2026 | $11.30/mg 20 mg · $225.99 checked 5 Nov 2026 | Grey Matters Research 85% cheaper |
| SNAP-8 | $1.00/mg 10 mg · $10.00 checked 18 Aug 2026 | $3.50/mg 10 mg · $34.99 checked 5 Nov 2026 | Grey Matters Research 71% cheaper |
| SS-31 | $1.16/mg 50 mg · $58.00 checked 18 Aug 2026 | $2.80/mg 50 mg · $139.99 checked 5 Nov 2026 | Grey Matters Research 59% cheaper |
| TB-500 | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Grey Matters Research 64% cheaper |
| Tesamorelin | $2.40/mg 20 mg · $48.00 checked 18 Aug 2026 | $6.25/mg 20 mg · $124.99 checked 5 Nov 2026 | Grey Matters Research 62% cheaper |
| Testagen | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Grey Matters Research 53% cheaper |
| Thymalin | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | $4.50/mg 10 mg · $44.99 checked 5 Nov 2026 | Grey Matters Research 64% cheaper |
| Thymosin Alpha-1 | $2.50/mg 10 mg · $25.00 checked 18 Aug 2026 | $7.50/mg 10 mg · $74.99 checked 5 Nov 2026 | Grey Matters Research 67% cheaper |
| Vesilute | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Grey Matters Research 53% cheaper |
| Vesugen | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $2.08/mg 60 mg · $124.99 checked 5 Nov 2026 | Grey Matters Research 33% cheaper |
| Vilon | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | $2.08/mg 60 mg · $124.99 checked 5 Nov 2026 | Grey Matters Research 33% cheaper |
Only at Grey Matters Research: 14 peptides in the same market
Only at Priority Peptides: 18 peptides in the same market
Grey Matters Research compared with
- Huaian Hanyou Peptide52 shared
- Peptides GG50 shared
- Peptides direct to you49 shared
- VPeptide48 shared
- Lab Ratz Research47 shared
- Luxe Peptides46 shared
- Research1peptides46 shared
- Core Peptides45 shared
- Raw Amino45 shared
- TrueLab Peptides44 shared
- NHOV43 shared
- Prime Longevity Peptides43 shared
- Eppixlabs42 shared
- Peptide Science Now41 shared
- Peptide Science Store41 shared
- Cenexa Labs40 shared
- Grey Axis Research40 shared
- LabFirst Peptides40 shared
- Nexus Bio Life40 shared
- Amino Usa39 shared
- Nordsci Peptides39 shared
- Vipris Biotechnology39 shared
- Catalyst Peptides38 shared
- Eros Peptides38 shared
- OP Labs38 shared
- Pure Lab Peptides38 shared
- Biotech Peptides36 shared
- Alpha Peptides34 shared
- SQS Research33 shared
- Bridge Research32 shared
Priority Peptides compared with
- Lab Ratz Research54 shared
- Peptides direct to you53 shared
- Huaian Hanyou Peptide52 shared
- Peptides GG49 shared
- Grey Axis Research48 shared
- TrueLab Peptides48 shared
- VPeptide48 shared
- Luxe Peptides47 shared
- Raw Amino47 shared
- Research1peptides47 shared
- Core Peptides46 shared
- NHOV46 shared
- Prime Longevity Peptides46 shared
- Peptide Science Now45 shared
- Eppixlabs44 shared
- Vipris Biotechnology44 shared
- Peptide Science Store43 shared
- Pure Lab Peptides43 shared
- Eros Peptides42 shared
- Nexus Bio Life42 shared
- Nordsci Peptides42 shared
- OP Labs42 shared
- Amino Usa41 shared
- Cenexa Labs41 shared
- LabFirst Peptides41 shared
- Alpha Peptides39 shared
- Biotech Peptides39 shared
- Catalyst Peptides39 shared
- SQS Research38 shared
- Bridge Research36 shared
Two listings are compared only when they are the same peptide in the same market, so a 10-vial kit is never set against a single vial. Price per mg is our arithmetic on the listed price, for comparison; the amount you pay is the listed price for the size shown, so check it on the vendor’s own page before you buy. What price per mg means.
No vendor can pay to change a price or the order of anything on this page. Some outbound links are affiliate links.