I have two PA-63s. I bought my first one from another individual. It is very nicely finished (polished blue slide, etc.) and works reliably, but the decocker is pretty much unsuable (it is VERY stiff - I can hardly make it work with both hands). I think something's broken. But the pistol works fine otherwise, so I just ignore it and drop the hammer (carefully) with my thumb. I think this is a commercial PA-63.
My second was ordered from Aim Surplus for about $90. It works fine mechanically, although the finish isn't nearly as nice as my first one. It's decocker/safety works fine. We ordered several of these at the same time, and mine was the only one that has the whole top of the slide covered with small machine marks - like they forgot to do the final polishing before bluing it. Aim was willing to exchange it, but I decided that I could live with this on a $90 surplus pistol.
Anyway, I like the PA-63s. Originally, I preferred them to Makarovs (lighter, sleeker looking, thumb-operated mag release), although now that I have a couple of each, I've grown more fond of the Maks.
Doug