Vendor comparison
Catalyst 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 68% lower than Catalyst Peptides’s.
- Listings on the index
- 55
- Cheaper per mg on
- 0 of 38 shared
- Certificates of analysis on file
- none yet
- Ships from
- not stated
- Latest price check
- 21 Oct 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.
- AHK-Cu
Catalyst Peptides
$0.420/mg
100 mg · $42.00
checked 21 Oct 2026
Grey Matters Research
$0.170/mg
100 mg · $17.00
checked 18 Aug 2026
Grey Matters Research 60% cheaper
- AICAR
Catalyst Peptides
$1.12/mg
50 mg · $56.00
checked 21 Oct 2026
Grey Matters Research
$0.300/mg
50 mg · $15.00
checked 18 Aug 2026
Grey Matters Research 73% cheaper
- AOD-9604
Catalyst Peptides
$9.60/mg
10 mg · $96.00
checked 21 Oct 2026
Grey Matters Research
$4.00/mg
5 mg · $20.00
checked 18 Aug 2026
Grey Matters Research 58% cheaper
- ARA-290
Catalyst Peptides
$5.90/mg
10 mg · $59.00
checked 21 Oct 2026
Grey Matters Research
$1.19/mg
16 mg · $19.00
checked 18 Aug 2026
Grey Matters Research 80% cheaper
- CJC-1295 DAC
Catalyst Peptides
$14.00/mg
5 mg · $70.00
checked 21 Oct 2026
Grey Matters Research
$4.20/mg
5 mg · $21.00
checked 18 Aug 2026
Grey Matters Research 70% cheaper
- DSIP
Catalyst Peptides
$5.20/mg
10 mg · $52.00
checked 21 Oct 2026
Grey Matters Research
$1.90/mg
10 mg · $19.00
checked 18 Aug 2026
Grey Matters Research 63% cheaper
- Epithalon
Catalyst Peptides
$3.15/mg
10 mg · $31.50
checked 21 Oct 2026
Grey Matters Research
$1.10/mg
20 mg · $22.00
checked 18 Aug 2026
Grey Matters Research 65% cheaper
- Glutathione
Catalyst Peptides
$0.051/mg
1500 mg · $77.00
checked 21 Oct 2026
Grey Matters Research
$0.012/mg
1500 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 77% cheaper
- Hexarelin
Catalyst Peptides
$13.00/mg
5 mg · $65.00
checked 21 Oct 2026
Grey Matters Research
$3.60/mg
5 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 72% cheaper
- IGF-1 LR3
Catalyst Peptides
$75.00/mg
1 mg · $75.00
checked 21 Oct 2026
Grey Matters Research
$34.00/mg
1 mg · $34.00
checked 18 Aug 2026
Grey Matters Research 55% cheaper
- Ipamorelin
Catalyst Peptides
$5.60/mg
10 mg · $56.00
checked 21 Oct 2026
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- Kisspeptin
Catalyst Peptides
$5.25/mg
10 mg · $52.50
checked 21 Oct 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 70% cheaper
- KPV
Catalyst Peptides
$4.50/mg
10 mg · $45.00
checked 21 Oct 2026
Grey Matters Research
$1.07/mg
30 mg · $32.00
checked 18 Aug 2026
Grey Matters Research 76% cheaper
- LL-37
Catalyst Peptides
$11.40/mg
5 mg · $57.00
checked 21 Oct 2026
Grey Matters Research
$3.60/mg
5 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- Mazdutide
Catalyst Peptides
$9.75/mg
10 mg · $97.50
checked 21 Oct 2026
Grey Matters Research
$3.60/mg
10 mg · $36.00
checked 18 Aug 2026
Grey Matters Research 63% cheaper
- Melanotan 1
Catalyst Peptides
$4.50/mg
10 mg · $45.00
checked 21 Oct 2026
Grey Matters Research
$1.50/mg
10 mg · $15.00
checked 18 Aug 2026
Grey Matters Research 67% cheaper
- Melanotan 2
Catalyst Peptides
$3.80/mg
10 mg · $38.00
checked 21 Oct 2026
Grey Matters Research
$1.40/mg
10 mg · $14.00
checked 18 Aug 2026
Grey Matters Research 63% cheaper
- MOTS-C
Catalyst Peptides
$4.20/mg
10 mg · $42.00
checked 21 Oct 2026
Grey Matters Research
$1.00/mg
40 mg · $40.00
checked 18 Aug 2026
Grey Matters Research 76% cheaper
- NAD+
Catalyst Peptides
$0.087/mg
1000 mg · $87.50
checked 21 Oct 2026
Grey Matters Research
$0.028/mg
1000 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- Oxytocin
Catalyst Peptides
$4.50/mg
10 mg · $45.00
checked 21 Oct 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 64% cheaper
- PE-22-28
Catalyst Peptides
$5.00/mg
10 mg · $50.00
checked 21 Oct 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- PEG-MGF
Catalyst Peptides
$24.00/mg
2 mg · $48.00
checked 21 Oct 2026
Grey Matters Research
$9.00/mg
2 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 63% cheaper
- Pinealon
Catalyst Peptides
$6.50/mg
10 mg · $65.00
checked 21 Oct 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 78% cheaper
- PT-141
Catalyst Peptides
$4.00/mg
10 mg · $40.00
checked 21 Oct 2026
Grey Matters Research
$1.50/mg
10 mg · $15.00
checked 18 Aug 2026
Grey Matters Research 63% cheaper
- Retatrutide
Catalyst Peptides
$10.00/mg
30 mg · $300.00
checked 21 Oct 2026
Grey Matters Research
$1.22/mg
60 mg · $73.00
checked 18 Aug 2026
Grey Matters Research 88% cheaper
- Selank
Catalyst Peptides
$4.20/mg
10 mg · $42.00
checked 21 Oct 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 62% cheaper
- Semaglutide
Catalyst Peptides
$7.13/mg
20 mg · $142.50
checked 21 Oct 2026
Grey Matters Research
$1.70/mg
10 mg · $17.00
checked 18 Aug 2026
Grey Matters Research 76% cheaper
- Semax
Catalyst Peptides
$4.20/mg
10 mg · $42.00
checked 21 Oct 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 62% cheaper
- SNAP-8
Catalyst Peptides
$3.10/mg
10 mg · $31.00
checked 21 Oct 2026
Grey Matters Research
$1.00/mg
10 mg · $10.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- SS-31
Catalyst Peptides
$6.30/mg
10 mg · $63.00
checked 21 Oct 2026
Grey Matters Research
$1.16/mg
50 mg · $58.00
checked 18 Aug 2026
Grey Matters Research 82% cheaper
- Survodutide
Catalyst Peptides
$11.00/mg
10 mg · $110.00
checked 21 Oct 2026
Grey Matters Research
$3.50/mg
10 mg · $35.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- TB-500
Catalyst Peptides
$6.50/mg
10 mg · $65.00
checked 21 Oct 2026
Grey Matters Research
$1.80/mg
10 mg · $18.00
checked 18 Aug 2026
Grey Matters Research 72% cheaper
- Tesamorelin
Catalyst Peptides
$10.00/mg
10 mg · $100.00
checked 21 Oct 2026
Grey Matters Research
$2.40/mg
20 mg · $48.00
checked 18 Aug 2026
Grey Matters Research 76% cheaper
- Testagen
Catalyst Peptides
$3.85/mg
20 mg · $77.00
checked 21 Oct 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 64% cheaper
- Thymalin
Catalyst Peptides
$6.00/mg
10 mg · $60.00
checked 21 Oct 2026
Grey Matters Research
$1.60/mg
10 mg · $16.00
checked 18 Aug 2026
Grey Matters Research 73% cheaper
- Thymosin Alpha-1
Catalyst Peptides
$7.80/mg
10 mg · $78.00
checked 21 Oct 2026
Grey Matters Research
$2.50/mg
10 mg · $25.00
checked 18 Aug 2026
Grey Matters Research 68% cheaper
- Vilon
Catalyst Peptides
$3.00/mg
20 mg · $60.00
checked 21 Oct 2026
Grey Matters Research
$1.40/mg
20 mg · $28.00
checked 18 Aug 2026
Grey Matters Research 53% cheaper
- VIP
Catalyst Peptides
$12.00/mg
10 mg · $120.00
checked 21 Oct 2026
Grey Matters Research
$2.20/mg
10 mg · $22.00
checked 18 Aug 2026
Grey Matters Research 82% cheaper
| Peptide | Catalyst Peptides | Grey Matters Research | Difference per mg |
|---|---|---|---|
| AHK-Cu | $0.420/mg 100 mg · $42.00 checked 21 Oct 2026 | $0.170/mg 100 mg · $17.00 checked 18 Aug 2026 | Grey Matters Research 60% cheaper |
| AICAR | $1.12/mg 50 mg · $56.00 checked 21 Oct 2026 | $0.300/mg 50 mg · $15.00 checked 18 Aug 2026 | Grey Matters Research 73% cheaper |
| AOD-9604 | $9.60/mg 10 mg · $96.00 checked 21 Oct 2026 | $4.00/mg 5 mg · $20.00 checked 18 Aug 2026 | Grey Matters Research 58% cheaper |
| ARA-290 | $5.90/mg 10 mg · $59.00 checked 21 Oct 2026 | $1.19/mg 16 mg · $19.00 checked 18 Aug 2026 | Grey Matters Research 80% cheaper |
| CJC-1295 DAC | $14.00/mg 5 mg · $70.00 checked 21 Oct 2026 | $4.20/mg 5 mg · $21.00 checked 18 Aug 2026 | Grey Matters Research 70% cheaper |
| DSIP | $5.20/mg 10 mg · $52.00 checked 21 Oct 2026 | $1.90/mg 10 mg · $19.00 checked 18 Aug 2026 | Grey Matters Research 63% cheaper |
| Epithalon | $3.15/mg 10 mg · $31.50 checked 21 Oct 2026 | $1.10/mg 20 mg · $22.00 checked 18 Aug 2026 | Grey Matters Research 65% cheaper |
| Glutathione | $0.051/mg 1500 mg · $77.00 checked 21 Oct 2026 | $0.012/mg 1500 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 77% cheaper |
| Hexarelin | $13.00/mg 5 mg · $65.00 checked 21 Oct 2026 | $3.60/mg 5 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 72% cheaper |
| IGF-1 LR3 | $75.00/mg 1 mg · $75.00 checked 21 Oct 2026 | $34.00/mg 1 mg · $34.00 checked 18 Aug 2026 | Grey Matters Research 55% cheaper |
| Ipamorelin | $5.60/mg 10 mg · $56.00 checked 21 Oct 2026 | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| Kisspeptin | $5.25/mg 10 mg · $52.50 checked 21 Oct 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 70% cheaper |
| KPV | $4.50/mg 10 mg · $45.00 checked 21 Oct 2026 | $1.07/mg 30 mg · $32.00 checked 18 Aug 2026 | Grey Matters Research 76% cheaper |
| LL-37 | $11.40/mg 5 mg · $57.00 checked 21 Oct 2026 | $3.60/mg 5 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| Mazdutide | $9.75/mg 10 mg · $97.50 checked 21 Oct 2026 | $3.60/mg 10 mg · $36.00 checked 18 Aug 2026 | Grey Matters Research 63% cheaper |
| Melanotan 1 | $4.50/mg 10 mg · $45.00 checked 21 Oct 2026 | $1.50/mg 10 mg · $15.00 checked 18 Aug 2026 | Grey Matters Research 67% cheaper |
| Melanotan 2 | $3.80/mg 10 mg · $38.00 checked 21 Oct 2026 | $1.40/mg 10 mg · $14.00 checked 18 Aug 2026 | Grey Matters Research 63% cheaper |
| MOTS-C | $4.20/mg 10 mg · $42.00 checked 21 Oct 2026 | $1.00/mg 40 mg · $40.00 checked 18 Aug 2026 | Grey Matters Research 76% cheaper |
| NAD+ | $0.087/mg 1000 mg · $87.50 checked 21 Oct 2026 | $0.028/mg 1000 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| Oxytocin | $4.50/mg 10 mg · $45.00 checked 21 Oct 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 64% cheaper |
| PE-22-28 | $5.00/mg 10 mg · $50.00 checked 21 Oct 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| PEG-MGF | $24.00/mg 2 mg · $48.00 checked 21 Oct 2026 | $9.00/mg 2 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 63% cheaper |
| Pinealon | $6.50/mg 10 mg · $65.00 checked 21 Oct 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 78% cheaper |
| PT-141 | $4.00/mg 10 mg · $40.00 checked 21 Oct 2026 | $1.50/mg 10 mg · $15.00 checked 18 Aug 2026 | Grey Matters Research 63% cheaper |
| Retatrutide | $10.00/mg 30 mg · $300.00 checked 21 Oct 2026 | $1.22/mg 60 mg · $73.00 checked 18 Aug 2026 | Grey Matters Research 88% cheaper |
| Selank | $4.20/mg 10 mg · $42.00 checked 21 Oct 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 62% cheaper |
| Semaglutide | $7.13/mg 20 mg · $142.50 checked 21 Oct 2026 | $1.70/mg 10 mg · $17.00 checked 18 Aug 2026 | Grey Matters Research 76% cheaper |
| Semax | $4.20/mg 10 mg · $42.00 checked 21 Oct 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 62% cheaper |
| SNAP-8 | $3.10/mg 10 mg · $31.00 checked 21 Oct 2026 | $1.00/mg 10 mg · $10.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| SS-31 | $6.30/mg 10 mg · $63.00 checked 21 Oct 2026 | $1.16/mg 50 mg · $58.00 checked 18 Aug 2026 | Grey Matters Research 82% cheaper |
| Survodutide | $11.00/mg 10 mg · $110.00 checked 21 Oct 2026 | $3.50/mg 10 mg · $35.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| TB-500 | $6.50/mg 10 mg · $65.00 checked 21 Oct 2026 | $1.80/mg 10 mg · $18.00 checked 18 Aug 2026 | Grey Matters Research 72% cheaper |
| Tesamorelin | $10.00/mg 10 mg · $100.00 checked 21 Oct 2026 | $2.40/mg 20 mg · $48.00 checked 18 Aug 2026 | Grey Matters Research 76% cheaper |
| Testagen | $3.85/mg 20 mg · $77.00 checked 21 Oct 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 64% cheaper |
| Thymalin | $6.00/mg 10 mg · $60.00 checked 21 Oct 2026 | $1.60/mg 10 mg · $16.00 checked 18 Aug 2026 | Grey Matters Research 73% cheaper |
| Thymosin Alpha-1 | $7.80/mg 10 mg · $78.00 checked 21 Oct 2026 | $2.50/mg 10 mg · $25.00 checked 18 Aug 2026 | Grey Matters Research 68% cheaper |
| Vilon | $3.00/mg 20 mg · $60.00 checked 21 Oct 2026 | $1.40/mg 20 mg · $28.00 checked 18 Aug 2026 | Grey Matters Research 53% cheaper |
| VIP | $12.00/mg 10 mg · $120.00 checked 21 Oct 2026 | $2.20/mg 10 mg · $22.00 checked 18 Aug 2026 | Grey Matters Research 82% cheaper |
Only at Catalyst Peptides: 17 peptides in the same market
Only at Grey Matters Research: 18 peptides in the same market
Catalyst Peptides compared with
- Lab Ratz Research51 shared
- NHOV49 shared
- Peptides direct to you49 shared
- Peptides GG48 shared
- Huaian Hanyou Peptide47 shared
- Research1peptides47 shared
- LabFirst Peptides46 shared
- Alpha Peptides45 shared
- Vipris Biotechnology45 shared
- Nexus Bio Life44 shared
- VPeptide43 shared
- Bridge Research42 shared
- Luxe Peptides42 shared
- Pure Lab Peptides42 shared
- Eppixlabs41 shared
- Grey Axis Research41 shared
- Raw Amino41 shared
- Biotech Peptides40 shared
- Core Peptides40 shared
- Peptide Science Now40 shared
- Prime Longevity Peptides40 shared
- Amino Usa39 shared
- Cenexa Labs39 shared
- Priority Peptides39 shared
- Eros Peptides38 shared
- OP Labs38 shared
- Peptide Science Store37 shared
- SQS Research37 shared
- TrueLab Peptides37 shared
- Nordsci Peptides36 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
- Eros 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.