I bought one from Arms Unlimited just before these popped up again at a lot of places. For $400 they didn't say much about the condition, but it turned out pretty good. Some staining and light pitting high on the left side of the slide and the rear sight. Probably about the same condition as what Atlantic calls "Very good or better" for the same price. Note that Atlantic's condition guide is the NRA "antique" guide which they call "antique and surplus", so Very Good means 30%+ original finish!
There is a seller on GB that has mags for $22 each and mine arrived. They look basically new and are Beretta mags with plastic floorplate.
Rob