The World Peptide Association price comparison tool lets you search any research peptide — semaglutide, tirzepatide, retatrutide, BPC-157, and dozens more — and compare live vendor prices side by side. The comparison table currently tracks 972 active product listings across verified research peptide suppliers.

Every listing is normalized to a price-per-mg figure so different vial sizes can be compared directly, and vendor discount codes are applied automatically so the price you see reflects the real checkout cost, not the sticker price.

Listings can be filtered by third-party Certificate of Analysis (COA) testing status, so you can limit results to vendors that publish independent purity verification for their products. Payment methods, shipping speeds, and bulk-order pricing are shown alongside each vendor.