The best places I've found locally for supplies is Atterbury for powder and primers and PSS for other things. Elmore's has decent primer prices too. The Outdoorsman in Greenwood has a decent selection of bullets, powders and accessories, but they must gold plate them or something. A box of Hornady 68g HPBT Match grade bullets in .223 run about $26 there. Bob sells the same thing for just over $18 out at PSS.
Another thing that's very handy is a Lee Autoprime. Before jumping to the Dillion, that's what I used to prime everything I loaded for.