If the price seems too good to be true, it probably is

Quick vendor quality reminder for newcomers.

When observing pricing disparities such as Vendor A charging $40 for BPC-157 while Vendor B offers it for $12, the answer is almost always related to quality.

What costs money in peptide production:
Actual synthesis (solid-phase peptide synthesis is expensive). Purification (HPLC purification to reach 98%+ purity requires time and materials). Third-party testing (Janoshik runs approximately $80-150 per test). Proper lyophilization procedures. Cold chain shipping (ice packs, insulated packaging). Customer support staff.

What might be obtained for $12:
Lower purity (90% versus 98%). No third-party testing. Incorrect peptide entirely (substitution). Degraded product (poor storage or handling). Truncated sequences (partial peptide rather than complete).

This is not to say expensive always equals good — some vendors are overpriced. However, if someone is consistently 50-70% cheaper than every other vendor, asking how they are cutting costs is appropriate.

The move:
Compare pricing across 4-5 reputable vendors. This establishes a baseline. Anything significantly below that baseline deserves scrutiny.