Current, overdue and historical peptide prices

A check date belongs to a supplier observation. Opening or publishing a Yopepi page does not make that price new.

Recent source observation

A successful first-party price read records its own time. Observations within 24 hours count as recent, but only exact source-confirmed formulations with matching vial strengths, verified product links and confirmed USD currency can enter a current comparison.

Overdue price

An overdue value is the last observed supplier price. Its original date stays attached, and it is excluded from current cheapest-price rankings. Visit the source to confirm its present price and availability.

Failed supplier check

A failed read does not mean a supplier has closed. Yopepi preserves its observations internally and hides a supplier whose latest check failed until a later readable check. A readable catalogue without fixed prices remains monitored; previous values are not restamped.

Historical source record

When an offer changes, retained earlier observations can explain what was previously recorded. A reference or “was” price advertised by a supplier is not automatically evidence of a previous transaction or an established earlier selling price.

What the scan count means

The landing-page count reports observations returned by checked suppliers on the latest scan day across AU and US. It is not a count of unique compounds, available stock or independent laboratory tests. Each source record keeps its own observation time.

Browse US comparison pages · Read the comparison methodology

Yopepi comparison methodology · Editorial review: 4 November 2026.