Know a fair per-isopod price before you buy.

The same isopod line sells in different group sizes at wildly different prices. We normalize every listing at 4 US vendors to a per-isopod price, every day. 32 named lines compared as of July 19, 2026.

Sticker prices are the wrong way to compare isopods. One vendor sells a culture as a "10 count", another as "15+", a third as a "25 count" — so a $40 listing can easily be a better deal than a $25 one. We read the group count out of every listing, including bonus animals (a "10+2" is 12), and divide, so every price on this site is the price of one isopod. Listings whose animal count we can't verify — springtail cultures sold by volume, "starter colony" listings with no stated count — are shown as group prices and kept out of the per-isopod stats rather than guessed.

For each line we show three per-isopod numbers. The low is the cheapest current listing anywhere — a real price you can go buy today. The median is the middle of all current listings and the best single anchor for "what does this isopod normally cost." The high is the most expensive listing, which is often a smaller group size (small groups cost more per animal) rather than the same deal at a worse price.

Prices are collected once a day from each vendor's public catalog, so everything here is at most a day old. The methodology page covers exactly what we track and how group-size normalization works.

Browse by genus

Armadillidium (8 lines) · Cubaris (6 lines) · Porcellio (13 lines) · Other isopods (4 lines) · Porcellionides (5 lines) · Springtails (1 lines) · Merulanella (2 lines)

Cheapest verified per-isopod prices right now

Full per-isopod price leaderboard →

Most-listed lines

Low/median/high are per-isopod prices.

Go deeper: cheapest isopods today · vendors compared · how the index works