Exactly WHO will bennifit from you reporting them? Honestly this is obsurd! Selling baby tortoises SHOULD be legal anyway! Honestly! If you report the person the torts end up confiscated by Animal control or WORSE fish and wildlife! Neither Animal control nor Fish and Wildlife have a CLUE as to the proper captive care of these animals and they would be in danger of starvation and other health risks while under their care. It's been noted on several occasions that confiscated animals are returned to the original owners (once the owners were found to be not guilty) in horrendous conditions!
Leave the poor Pet Shop owner be! He/she is trying to squeek out a living as best as they can in an already difficult to stay alive in business.
Sounds to me that you need to concentrate more on keeping YOUR animals healthy and not worry so much about what others are doing.
Chris