No kidding! I've priced comparable ARs at Gander Mountain and they're at least $250 - 300 more. Even the ammo is cheap at $6.29 a box.
Mind you, this is not for me. It's for my gun-loving friends. For Christmas. I don't believe in guns. Really.
The PMC .223 Remington @ $6.29/box (Cabelas price) of 20 rounds is actually lower than it was just before Sandy Hook. I was in the Hamburg, PA store in early December 2012 and they had this ammo on skids near the checkout for $6.49/box.
Gander Mountain is over-priced on everything.