Question about purchases at shows

[Alicia]

If the breeder is a bona-fide business he should be charging sales tax and you should get a receipt. A hobbyist will likely be cash & carry, though you may get a hand receipt.

Yep, this. Some shows will even require each buyer to leave with a receipt. Really, unless you're in state that doesn't have a sales tax, expect it.

It's good to get all that stuff, anyway. For me, I always write down who I purchase snakes from, along with the date and all their info, save their card, etc. But I can get kinda crazy with records. If someone isn't willing to provide contact info and follow up . . . walk away . . .