I have a PS90, and ammo is not a problem. Just order 2k rnds for 710 bucks delivered. Search the web for deals on quantity orders. My local Cabelas had it for under 20 bucks a box 2 weeks ago. Their handgun section was empty except for 60 boxes of 5/7. You can find it on line alot of places but the price
is all over the map.
Enjoy.