Yeah that is the tough part. Walk down the aisles and your mind goes "oh look at the Spied, only $5,000!!!!!", "Oh wow look how cheap those crocks are, i need some for my new rack", "You know, i always did want a Black Mamba......"
These thoughts are what cause all of us to leave with more than we thought we would, but as long as you asked a lot of questions and didn't buy with a naive look on reptiles, then you will come home a winner with a mighty large grin...