Actually that states 250 a set. A set is 5 dishes or 50 bucks a dish. Am I reading this correctly? Seems expensive but not for today's prices. Anyone know how much they pay now for a traditional petri dish?
I saw these at 17.99 a piece although it seems they may be re-usable as they are listed as being to have multiple sterilizations
Pyrex®, Petri Culture Dish, 150 x 20 mm

George