Sorry if this is not the right forum - it seemed to be.

Anyone have any idea of how much a "medium" sized gun store, (not big like Cabela's and not a small "mom & pop" shop) marks up their new firearms over cost?

I know that different dealers get different price structures from manufacturers but does anyone have rough order of magnitude? Is it 5-10% 15-20% greater than 20 or 30% over cost?

I know that used guys sell for a very high mark up. I was wondering what it is for new guns.

Thanks
Seabee CO