A Rubber Ducky Isopod costs $16.58–$33.25 per isopod today; the median is $20.75. Based on 4 in-stock listings with a stated animal count across 1 US vendor, updated November 14, 2026.
Per-isopod prices are computed from the stated group count (a $36
ten-plus-two culture is $3.00/isopod). Shipping and live-arrival
guarantee terms differ by vendor and can change which one is cheapest
to your door.
Reading today's numbers
Only one vendor currently lists Rubber Ducky Isopod, so today's range ($16.58–$33.25) reflects that vendor's own listings rather than a cross-vendor comparison. A spread that wide usually reflects real differences between the listings — group size is the usual driver, since larger cultures tend to work out cheaper per isopod, and some listings mix sizes or include breeding adults. When judging a price, the median ($20.75) is the better anchor than the low: the cheapest listing can be a large-culture price. If a quote is well above the median, check the vendor table above to see what group size you're comparing against. Note that 4 of 9 tracked listings are in stock right now; today's stats come from the in-stock ones.