Wondering if anybody knows about the cyclones that are being sold on eBay by a user called "eastcaroga" - he advertises them for $149 to $199, depending on inlet size. As far as I can tell, the seller also sells them via http://www.cycloneseparator.com/
He's selling the cyclone separator only; you'd have to rig up the blower motor, etc. possibly from an existing portable DC unit.
I didn't see any other reference to these cyclones recently (a brief discussion from 2007 is all I found) - so I'm wondering if anyone here knows anything about the cyclones and whether they're worth the (seemingly too low to be true) price tag?