Rhodes Chroma Polaris

thanks for the demo links - super cool/very good.
the polaris is odd, both thick and thin at the same time. and would 
like to get my hands on one but think the 650 ive seen it for is too 
much in todays climate, but your good demos do turn my head so dunno 
maybe i'll get it. do they go on ebay often ( how much ? ) or are they 
rare and unreliable?
thnks justin