I just put together a new one and wanted take my dad with me, it's been forever since we have went. I should have planned better. I'm think bradis isn't too awfully far but just far enough. A local shop in whitestown wanted over 8$ a box of twenty for some Tula. Nah!!
Yeah, the Dunham's in Muncie has a "normal" price of $9.99 on the WPA 7.62x39. If you just need a couple of boxes to plinking with Dad though, I would probably just bite the bullet and pay that price to save time and gas. If I was buying a 1000 or more though, I would order online.
I also discovered SGAMMO for my ammunition needs. I have ordered many rounds and calibers through them on many separate occasions. I have always had a positive experience with them. Their prices even with the shipping are going to be much lower than anything you will find in a store.