I haven't seen any in my area. Even if they did sell some accessories, it would be like any other Android accessories sold at BestBuy... 4,000 iPhone cases, and 2 Android cases per model.
I wouldn't recommend paying for anything from them before doing a bit of research.
For example; I had a Seidio Active case for my HTC One, I got it online for $20. BestBuy had the same case (without the silicone insert) for $35... same kickstand, same cutouts, the exact same case minus the "SEIDIO" across the back.
iPhone 5s [64GB]
iPad 3rd [16Gb] [Wi-Fi] [White]
HTC One [32GB] [Black]
Rooted HTC Incredible
(CM9 + CM9 Kernel)
BlackBerry Bold 9650 [VZW]
iPhone 4s [32GB]