I've seen snakes too small to sell all over the place, in pet stores and from breeders. I think this is just greed. I've made the mistake myself when I was first buying snakes to buy the real young ones. No one seems to say anything to you when you do this. They don't ask if you have access to a reliable source of suitably sized prey. It's incredibly hard to find little, tiny pinkies and most new herpers have never heard of a pinky pump (hell, I hadn't heard of one until about a month ago). Personally I avoid the really small babies because they have a high mortality rate to begin with and they are very hard to feed. It is possible to care for a snake that's fresh out of the shell but breeders ought to be keeping them back until they are viable to the average customer not just the experts.
I feel a little light headed... maybe you should drive...