Above a certain price and the vendor usually doesn't write them down. There were also scaleless heads at that NARBC Arlington show that were 50 - 60 grand a piece.
Other than these, which are actually not so common at smaller shows (at least around here), you can usually expect animals at shows to be slightly cheaper than online though they may still vary greatly from table to table. Not all vendors at the local repticon or other shows here have hand sanitizer or require you to use it before you touch, so bringing your own might actually be a good idea. I try to make it to a show every month, and I have to say the biggest problem for me is holding on to whatever money I walked in with.
It's like being a kid in a candy store that has all your favorite things but smells kind of funny.