Very few petco's have their reptiles set up properly.
It is very difficult to sell an animal that likes to hide all the time and prefers darkness. The solution? Remove the hides and brighten the lights. The effect? Unhealthy animals.
Leos are bred in mass quantities all across the country and easy to be had at reptile shows from private breeders who, most of the time, take proper care of them. Not to mention, at a fraction of the cost you'd pay at a Petco.