I have made three recent trips to the August store. Once for myself (picked up a replacement Great Planes Citabria, now out of production) and with two other club members. No question, he has the largest supply of hobby stuff within a 100 mile radius. You can find replacement parts, new kits, RC cars, plastic models, and about every knickknack required by our RC and modeling brethren.
Before you go online and order that new plane, check with this store. He has a pretty good supply of the new stuff and some of the oldies that you cannot get anymore. I found some tail section parts for the E-flite Apprentice that I'd almost given up on. It's worth the 2 hour round trip to browse. Seeing the item in person, beats browsing the web.