There is currently this one available on craigslist in my area up near seattle, wa. The guy for some reason doesn't really want to ship it out. He is trying to get at least $400 which is a steal. Make him a good offer and maybe you can convince him to ship to you. No idea if he has paypal or would do money order. http://seattle.craigslist.org/sno/spo/3202582898.html
I just contact the guy locally. I am working with him to help him sell it. For full disclosure, if I help him sell at his asking price I am getting an Evo hopper out of it. I couldn't afford to buy the zforce myself.
If interested PM me or contact him directly. He doesn't know how to do paypal or USPS money orders so I am helping him with that process.