TexasCHLforum.com

The one in Round Rock usually has good prices on powder. The only other place that sells it that I know of is Cabelas, at least around Austin.
Sportsman's Warehouse hasn't stocked up on reloading bullets or primers for a while. I thought I saw a Lee Anniversary Kit in a box on the top shelf above the dies, last week when I was there, but none on display.

I've bought three handguns from them, but probably could have gotten better deals if I looked around.