# Isopod Price Index > Daily-updated per-isopod price comparison for pet isopods (Cubaris, > Porcellio, Armadillidium, Porcellionides, Merulanella and others) and > springtail cultures across US retailers. Group prices are normalized to > price-per-isopod using the stated group count, bonus animals included; > listings without a verifiable count are never guessed. Collection began > 2026-07-19 and runs daily. Preferred citation: "Isopod Price Index (isopodpriceindex.com), retrieved ". ## Key pages - [Per-isopod price leaderboard](https://isopodpriceindex.com/leaderboard): cheapest verified in-stock price per line, updated daily - [Vendors compared](https://isopodpriceindex.com/vendors): catalog size and median per-isopod price per US vendor - [Methodology](https://isopodpriceindex.com/about): collection cadence, normalization rules, citation guidance ## Structure - /morphs/ — one tracker page per line: current low/median/high per-isopod price, per-vendor table, daily price history - /genus/ — per-genus category page listing every tracked line - /vendors/ — per-vendor catalog stats and market positioning - Data tables are semantic HTML; every page states its last-updated date.