It's an interesting machine, and it's nice that it's in one piece, but...
I passed on one from ebay for $100 (including shipping). Unless it's in GOOD working order - and I don't mean 'I plugged it in and it works' - you're not going to get anywhere near what you're asking. Matter of fact, there was a PRISTINE polished one on ebay a while back, it was posted for over a year, IIRC, asking for about $500 and they never sold it.
Hate to burst your bubble, but it is worth next to nothing. Even to the right person (which would probably be me, as nobody else around here [HERE!] seems to care much about Clements-made vacs) it's not worth anywhere near what you're asking. Plus shipping a large item like that (even though the handle is removable) is not cheap anymore. Shipping would likely be $40-80 in mainland US. And given that someone looking to buy one of these would want to pay that much in total, it becomes very difficult to sell something like this.
So yeah. Good luck.