A USGI "mixmaster" like that would be a CMP Service Grade, $1250. Probably flippable for more.
I can't ID the other 1911 for sure, the grips and white paint in slide markings indicate it is likely a low end import, $400 at best.
The black pistol is from the XD series, not expensive, the Beretta PCC is $800 new. I don't know the legal status of the AK with butt removed, it might be NFA.