Best place to buy AMD panels??

If you can get to one of the big all Mopar events like Carslyle or something like that the independent AMD vendors there always beat AMD's catalog prices and will usually work with you on price if you're buying a few pieces. The official AMD guys are ignorant and jack their prices up for the shows. Good parts just bad representatives at the shows.
Otherwise Tamraz has pretty good prices when you add in shipping costs.