Vendor comparison
Eros Peptides vs Grey Matters Research
Grey Matters Research is cheaper per mg on 38 of the 38 peptides they share.
Across all 38, Grey Matters Research’s price per mg is a median 50% lower than Eros Peptides’s.
- Listings on the index
- 54
- Cheaper per mg on
- 0 of 38 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 4 Nov 2026
- Listings on the index
- 56
- Cheaper per mg on
- 38 of 38 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 18 Aug 2026
Retail 38
Purchases of fewer than 10 vials.
- Adamax
Eros Peptides
$6.00/mg
10 mg · $59.99
checked 4 Nov 2026
Grey Matters Research
$4.20/mg
10 mg · $42.00
checked 18 Aug 2026
Grey Matters Research 30% cheaper
- AOD-9604
Eros Peptides
$5.00/mg
10 mg · $49.99
checked 4 Nov 2026
Grey Matters Research
$4.00/mg
5 mg · $20.00
checked 18 Aug 2026
Grey Matters Research 20% cheaper
- ARA-290
Eros Peptides
$3.75/mg
20 mg · $74.99
checked 4 Nov 2026
Grey Matters Research
$1.19/mg
16 mg · $19.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- Cardiogen
Eros Peptides
$3.00/mg
20 mg · $59.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 53% cheaper
- CJC-1295 NO DAC
Eros Peptides
$4.40/mg
10 mg · $43.99
checked 4 Nov 2026
Grey Matters Research
$2.60/mg
10 mg · $26.00
checked 18 Aug 2026
Grey Matters Research 41% cheaper
- Cortagen
Eros Peptides
$2.75/mg
20 mg · $55.00
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 49% cheaper
- DSIP
Eros Peptides
$3.40/mg
5 mg · $17.00
checked 4 Nov 2026
Grey Matters Research
$1.90/mg
10 mg · $19.00
checked 18 Aug 2026
Grey Matters Research 44% cheaper
- Epithalon
Eros Peptides
$2.50/mg
10 mg · $24.99
checked 4 Nov 2026
Grey Matters Research
$1.10/mg
20 mg · $22.00
checked 18 Aug 2026
Grey Matters Research 56% cheaper
- Hexarelin
Eros Peptides
$7.40/mg
5 mg · $37.00
checked 4 Nov 2026
Grey Matters Research
$3.60/mg
5 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 51% cheaper
- IGF-1 LR3
Eros Peptides
$39.99/mg
1 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$34.00/mg
1 mg · $34.00
checked 18 Aug 2026
Grey Matters Research 15% cheaper
- Ipamorelin
Eros Peptides
$2.80/mg
10 mg · $27.99
checked 4 Nov 2026
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 36% cheaper
- Kisspeptin
Eros Peptides
$4.00/mg
10 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 60% cheaper
- KPV
Eros Peptides
$4.50/mg
10 mg · $44.99
checked 4 Nov 2026
Grey Matters Research
$1.07/mg
30 mg · $32.00
checked 18 Aug 2026
Grey Matters Research 76% cheaper
- LL-37
Eros Peptides
$7.00/mg
10 mg · $70.00
checked 4 Nov 2026
Grey Matters Research
$3.60/mg
5 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 49% cheaper
- Mazdutide
Eros Peptides
$7.00/mg
5 mg · $34.99
checked 4 Nov 2026
Grey Matters Research
$3.60/mg
10 mg · $36.00
checked 18 Aug 2026
Grey Matters Research 49% cheaper
- Melanotan 2
Eros Peptides
$2.40/mg
10 mg · $23.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
10 mg · $14.00
checked 18 Aug 2026
Grey Matters Research 42% cheaper
- MOTS-C
Eros Peptides
$2.00/mg
40 mg · $79.99
checked 4 Nov 2026
Grey Matters Research
$1.00/mg
40 mg · $40.00
checked 18 Aug 2026
Grey Matters Research 50% cheaper
- NAD+
Eros Peptides
$0.065/mg
1000 mg · $64.99
checked 4 Nov 2026
Grey Matters Research
$0.028/mg
1000 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 57% cheaper
- Ovagen
Eros Peptides
$2.00/mg
20 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 30% cheaper
- Oxytocin
Eros Peptides
$4.00/mg
10 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 60% cheaper
- Pancragen
Eros Peptides
$3.00/mg
20 mg · $59.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 53% cheaper
- PE-22-28
Eros Peptides
$4.00/mg
10 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 60% cheaper
- Pinealon
Eros Peptides
$1.75/mg
20 mg · $34.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 20% cheaper
- Prostamax
Eros Peptides
$2.00/mg
20 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 30% cheaper
- PT-141
Eros Peptides
$2.40/mg
10 mg · $23.99
checked 4 Nov 2026
Grey Matters Research
$1.50/mg
10 mg · $15.00
checked 18 Aug 2026
Grey Matters Research 37% cheaper
- Selank
Eros Peptides
$3.00/mg
10 mg · $29.99
checked 4 Nov 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 47% cheaper
- Semax
Eros Peptides
$3.50/mg
10 mg · $34.99
checked 4 Nov 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 54% cheaper
- SNAP-8
Eros Peptides
$2.25/mg
20 mg · $44.99
checked 4 Nov 2026
Grey Matters Research
$1.00/mg
10 mg · $10.00
checked 18 Aug 2026
Grey Matters Research 56% cheaper
- Survodutide
Eros Peptides
$7.50/mg
10 mg · $74.99
checked 4 Nov 2026
Grey Matters Research
$3.50/mg
10 mg · $35.00
checked 18 Aug 2026
Grey Matters Research 53% cheaper
- TB-500
Eros Peptides
$4.50/mg
20 mg · $89.99
checked 4 Nov 2026
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 60% cheaper
- Tesamorelin
Eros Peptides
$4.80/mg
10 mg · $47.99
checked 4 Nov 2026
Grey Matters Research
$2.40/mg
20 mg · $48.00
checked 18 Aug 2026
Grey Matters Research 50% cheaper
- Testagen
Eros Peptides
$3.00/mg
20 mg · $60.00
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 53% cheaper
- Thymogen
Eros Peptides
$3.00/mg
20 mg · $59.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 53% cheaper
- Thymosin Alpha-1
Eros Peptides
$5.00/mg
10 mg · $49.99
checked 4 Nov 2026
Grey Matters Research
$2.50/mg
10 mg · $25.00
checked 18 Aug 2026
Grey Matters Research 50% cheaper
- Thymulin
Eros Peptides
$3.00/mg
10 mg · $29.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 53% cheaper
- Vesugen
Eros Peptides
$2.00/mg
20 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 30% cheaper
- Vilon
Eros Peptides
$2.00/mg
20 mg · $39.99
checked 4 Nov 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 30% cheaper
- VIP
Eros Peptides
$6.00/mg
10 mg · $59.99
checked 4 Nov 2026
Grey Matters Research
$2.20/mg
10 mg · $22.00
checked 18 Aug 2026
Grey Matters Research 63% cheaper
| Peptide | Eros Peptides | Grey Matters Research | Difference per mg |
|---|---|---|---|
| Adamax | $6.00/mg 10 mg · $59.99 checked 4 Nov 2026 | $4.20/mg 10 mg · $42.00 checked 18 Aug 2026 | Grey Matters Research 30% cheaper |
| AOD-9604 | $5.00/mg 10 mg · $49.99 checked 4 Nov 2026 | $4.00/mg 5 mg · $20.00 checked 18 Aug 2026 | Grey Matters Research 20% cheaper |
| ARA-290 | $3.75/mg 20 mg · $74.99 checked 4 Nov 2026 | $1.19/mg 16 mg · $19.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| Cardiogen | $3.00/mg 20 mg · $59.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 53% cheaper |
| CJC-1295 NO DAC | $4.40/mg 10 mg · $43.99 checked 4 Nov 2026 | $2.60/mg 10 mg · $26.00 checked 18 Aug 2026 | Grey Matters Research 41% cheaper |
| Cortagen | $2.75/mg 20 mg · $55.00 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 49% cheaper |
| DSIP | $3.40/mg 5 mg · $17.00 checked 4 Nov 2026 | $1.90/mg 10 mg · $19.00 checked 18 Aug 2026 | Grey Matters Research 44% cheaper |
| Epithalon | $2.50/mg 10 mg · $24.99 checked 4 Nov 2026 | $1.10/mg 20 mg · $22.00 checked 18 Aug 2026 | Grey Matters Research 56% cheaper |
| Hexarelin | $7.40/mg 5 mg · $37.00 checked 4 Nov 2026 | $3.60/mg 5 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 51% cheaper |
| IGF-1 LR3 | $39.99/mg 1 mg · $39.99 checked 4 Nov 2026 | $34.00/mg 1 mg · $34.00 checked 18 Aug 2026 | Grey Matters Research 15% cheaper |
| Ipamorelin | $2.80/mg 10 mg · $27.99 checked 4 Nov 2026 | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 36% cheaper |
| Kisspeptin | $4.00/mg 10 mg · $39.99 checked 4 Nov 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 60% cheaper |
| KPV | $4.50/mg 10 mg · $44.99 checked 4 Nov 2026 | $1.07/mg 30 mg · $32.00 checked 18 Aug 2026 | Grey Matters Research 76% cheaper |
| LL-37 | $7.00/mg 10 mg · $70.00 checked 4 Nov 2026 | $3.60/mg 5 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 49% cheaper |
| Mazdutide | $7.00/mg 5 mg · $34.99 checked 4 Nov 2026 | $3.60/mg 10 mg · $36.00 checked 18 Aug 2026 | Grey Matters Research 49% cheaper |
| Melanotan 2 | $2.40/mg 10 mg · $23.99 checked 4 Nov 2026 | $1.40/mg 10 mg · $14.00 checked 18 Aug 2026 | Grey Matters Research 42% cheaper |
| MOTS-C | $2.00/mg 40 mg · $79.99 checked 4 Nov 2026 | $1.00/mg 40 mg · $40.00 checked 18 Aug 2026 | Grey Matters Research 50% cheaper |
| NAD+ | $0.065/mg 1000 mg · $64.99 checked 4 Nov 2026 | $0.028/mg 1000 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 57% cheaper |
| Ovagen | $2.00/mg 20 mg · $39.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 30% cheaper |
| Oxytocin | $4.00/mg 10 mg · $39.99 checked 4 Nov 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 60% cheaper |
| Pancragen | $3.00/mg 20 mg · $59.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 53% cheaper |
| PE-22-28 | $4.00/mg 10 mg · $39.99 checked 4 Nov 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 60% cheaper |
| Pinealon | $1.75/mg 20 mg · $34.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 20% cheaper |
| Prostamax | $2.00/mg 20 mg · $39.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 30% cheaper |
| PT-141 | $2.40/mg 10 mg · $23.99 checked 4 Nov 2026 | $1.50/mg 10 mg · $15.00 checked 18 Aug 2026 | Grey Matters Research 37% cheaper |
| Selank | $3.00/mg 10 mg · $29.99 checked 4 Nov 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 47% cheaper |
| Semax | $3.50/mg 10 mg · $34.99 checked 4 Nov 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 54% cheaper |
| SNAP-8 | $2.25/mg 20 mg · $44.99 checked 4 Nov 2026 | $1.00/mg 10 mg · $10.00 checked 18 Aug 2026 | Grey Matters Research 56% cheaper |
| Survodutide | $7.50/mg 10 mg · $74.99 checked 4 Nov 2026 | $3.50/mg 10 mg · $35.00 checked 18 Aug 2026 | Grey Matters Research 53% cheaper |
| TB-500 | $4.50/mg 20 mg · $89.99 checked 4 Nov 2026 | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 60% cheaper |
| Tesamorelin | $4.80/mg 10 mg · $47.99 checked 4 Nov 2026 | $2.40/mg 20 mg · $48.00 checked 18 Aug 2026 | Grey Matters Research 50% cheaper |
| Testagen | $3.00/mg 20 mg · $60.00 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 53% cheaper |
| Thymogen | $3.00/mg 20 mg · $59.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 53% cheaper |
| Thymosin Alpha-1 | $5.00/mg 10 mg · $49.99 checked 4 Nov 2026 | $2.50/mg 10 mg · $25.00 checked 18 Aug 2026 | Grey Matters Research 50% cheaper |
| Thymulin | $3.00/mg 10 mg · $29.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 53% cheaper |
| Vesugen | $2.00/mg 20 mg · $39.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 30% cheaper |
| Vilon | $2.00/mg 20 mg · $39.99 checked 4 Nov 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 30% cheaper |
| VIP | $6.00/mg 10 mg · $59.99 checked 4 Nov 2026 | $2.20/mg 10 mg · $22.00 checked 18 Aug 2026 | Grey Matters Research 63% cheaper |
Only at Eros Peptides: 16 peptides in the same market
Only at Grey Matters Research: 18 peptides in the same market
Eros Peptides compared with
- Peptides GG50 shared
- VPeptide48 shared
- Grey Axis Research47 shared
- Lab Ratz Research47 shared
- Luxe Peptides46 shared
- Prime Longevity Peptides46 shared
- Research1peptides46 shared
- TrueLab Peptides46 shared
- Amino Usa45 shared
- Huaian Hanyou Peptide45 shared
- Peptides direct to you45 shared
- Raw Amino44 shared
- Core Peptides43 shared
- Cenexa Labs42 shared
- Eppixlabs42 shared
- NHOV42 shared
- Nordsci Peptides42 shared
- Peptide Science Store42 shared
- Priority Peptides42 shared
- Pure Lab Peptides42 shared
- OP Labs41 shared
- Peptide Science Now40 shared
- Vipris Biotechnology40 shared
- Nexus Bio Life39 shared
- Catalyst Peptides38 shared
- LabFirst Peptides38 shared
- Alpha Peptides37 shared
- Biotech Peptides37 shared
- Bridge Research35 shared
- SQS Research35 shared
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
- Priority Peptides42 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
- OP Labs38 shared
- Pure Lab Peptides38 shared
- Biotech Peptides36 shared
- Alpha Peptides34 shared
- SQS Research33 shared
- Bridge Research32 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.