They charge MSRP, so new gun prices are stiff. Used gun prices are hit or miss. There are deals to be had on both. I picked up a new Remington SPS Varmint in .223 for $479 on a crazy sale they had, and have snagged a few deals on used pistols. Best was "Clackamas" marked Kimber at $550 (less the $100 off $500 coupon
).
I'm a bit frugal, so I scour the bargain cave, and have had great luck picking up hunting and camping stuff.