Back in my younger days I went to Petsmart and bought an iguana. Before they sold it they had my Mom read a caresheet.
The sales guy gave me his phone number incase I had any questions. It only take one or two knowledgeble and dedicated individuals to make a responsable petstore. The Ruffins near me (Stratford) has a reptile guy now too. Not only that but they've stopped stocking tokays, african rocks and all those other notoriously poor pets. I like to think that in general stores are becoming more responseable, even if their customers aren't.