I find all the big box stores like that. I've got some real deals from Cabela's in multiple states on a variety of guns. But then there are some that are crazy overpriced. When I lived in Michigan, I used to frequent the Dundee Cabela's, they would often have a used Glock in the case in the gun library, for more than a new one in the new gun section.
I have found whitey a few decent deals at cabelas. Rare but they're the. My favorite was a surplus hi power for$350 iirc. This was since the hi power mark up recently.