Shot one... an AP9 that I had the "opportunity" to buy a couple of years ago for $90. (He started at $120.) I probably should have bought it for the price but only as a novelty.
Do a search on TheFiringLine and TheHighRoad. Many, many completed sales for between $100 - $180.
Accuracy was very, very bad on the one I shot. Almost like the barrel was too large and the rifling was ineffective.