I was disgusted by the state of the fish in that store, the one closer to where I live actually takes fantastic care of their bettas, but this one had dead fish everywhere, and nearly all of the others were suffering from fin rot and other illnesses.
This guy was the only one that I thought I would even have a chance at saving. I purchased him, got him to the car and he perked right up! Now he's in a separated tank with Charlotte, and seems very happy so far. Though he doesn't seem to have a very big appetite at the moment.