J&G Sales (520)445-9650 has new ones for $20 and used for $18. They also have holsters: new for $15, used for $10. Web page is: http://www.jgsales.com/jghandguns.html
Alpha Trading Co (800)829-1925 has them for, ouch, $29.
Forrest Inc (619)561-5800 has them for $25.
Stay away from that surplus Czech stuff that comes on 8-rnd stripper clips. It's bad stuff, probably subgun ammo.
[This message has been edited by Destructo6 (edited January 06, 2000).]