doesn’t it make sense however to start w ith the cheapest possible pool — $10 — and see how much pleasure it gives? i think it may be even more fun that the larger one described — my teen has set up a ladder and some boards over the pool, it’s already gotten several dozen hours of creative usage out of it, for less than the price of one bromide or chlorine treatment! they are doing all sorts of weird games with it…and getting wet…and cooling off…isn’t that the fundamental purpose of a pool?