http://bit.ly/ZeZDiQ hope this helps.
I looked at some of those links - not entirely helpful. Some of the info is dated and at least one of the listed shops went out of business due to the poor economy but is keeping the site for a possible future re-opening.
Quad, I would be shocked and surprised if Disney World (and possibly Universal Studios) didn't have a magic shop on-premises.
This shop is in Universal as well as online:
http://www.theatremagic.com/ Unfortunately, I think they only carry their own overpriced brand. Disney has two shops, according to what I've read, but one's overpriced and the other had terrible customer service - but bear in mind my intel on this is about three years old.
These one came recommended on a T11 forum:
http://magicdovemagicshop.com/If you're willing to take a day trip to Daytona Beach, this place apparently has a massive selection. Plus I hear Daytona's a nice place to visit.
http://www.daytonamagic.com/