I'm converting from a dedicated cabinet to a stand-alone CP. This leaves me with my old cabinet unused, and now for sale.
It's based on the Ultimate Arcade 2 plans from Mameroom, with an non-standard inside width of 27 3/4" (larger than normal.)
It had a keyboard drawer on slides, a Happs single coin door (the fake one with no internal mechanism) and I'll throw in my (well-used) copy of the Project Arcade book + CD, Plexi for marquee area, glass for the monitor area, and a Happs 27" flat monitor bezel (which will NOT fit the monitor opening of this cab, the Happs bezel is too small.)
The cabinet is black (5 coats of acrylic over primer) with blue Happs T-molding and looks great. (This was my second build, I made all of mistakes on the first one.

$75 takes it.
EDIT: It's made out of 3/4" MDF.