I know this is old; I'm sorry, I just had to chime in --
We don't have a LFS nearby (within 50 miles), so only option is Petco.
I abhor the conditions these fish are kept in. Tux was in a small cup full of dirty, floaty water that looked like it hadn't been changed in a week, on the shelf next to a cup with a DEAD betta in it. The fish all look tiny, dull, and weary. It's like they're put on a shelf and forgotten about!
(It's a shame, too, because the resident "Fish Expert" I've talked to many times is very passionate, knowledgeable, helpful, honest, and clearly interested in fish-keeping, I just think he's working for a crappy company.)
I brought Tux home from here because he was gorgeous and appeared healthy despite his awful living conditions. Nobody could speak to how long he'd been on the shelf or where the fish came from (the cup says "Distributed from California").
P.S. They kept their bettas in two places -- 1 shelf was kept by the door/check-out at the end of an aisle.... these bettas all looked pretty plain/miserable. The 2nd stock was kept in the fish area, under more favorable light/temperature conditions -- these ones were different varieties and colors.