I'd have to agree, most pet stores don't know much (to say the most) about reptiles/snakes. I bought my bp at superpets and she was housed with two other bp with only an overthe tank light, bowl of water, and a plant. They acted like they knew alot about snakes and told me only to keep her tank at 78-80 F & that she had ate that day. Nothing about the sex, where she came from, how old, etc. They just acted like I was stupid.
Since they do specialize in other pets (mainly dogs and cats) I shouldn't expected much from them.

But Not all pet stores are like that. A reptile shop just opened near me (We bought our macklot from them) and they are awesome. They check daily the temps of all the reptiles, feed them properly, have hides and everything basic that the reptiles need, and they even have just some display animals (that they would never sell). The staff is friendly and helpful, they probe the snakes properly, are willing to answer any questions that they can, and they breed all the mice and rats there. I just wish more places were like that.

So sorry for the long post. But I just thought I'd share my experiences.