That looks like an crazy powerful life-ender! 0w0

I wander how much it ammunition costs?

Oh, these were some of the best shotguns in the game (in my opinion), excluding some of the crazy legendary ones of course. They dealt bonus explosive damage so they were pretty handy against the tougher enemies--at close range, the body parts really started flying because pellet spread didn't get a chance to really kick in.

I do remember their projectiles being a bit on the slower side and many of them consuming multiple shells per shot, though...