I agree completely. It is not particularly cruelty-free to sell snakes, especially to little kids in communities that don't have an abundance of pet stores, and to not sell feeder mice or feeder rats. The store is pretty much condemning every snake they sell to starvation, at worst, and, to my way of thinking, is probably responsible for at least some of the 'humane' dumping of exotic reptiles out in the countryside where they can 'forage for themselves'. As if.
By the way, starving snakes probably comes under the heading of cruelty.
You will have no trouble buying crickets at these stores ... and they know the crickets are used for food. I guess 'cruelty' towards insects is cool with them.