Cyclo orbitals come up on ebay occasionally for under $200, I was fortunate I found mine on the local craigslist for $120, best thing about cyclo's is EVERY single part is available from the manufacturer (Denver CO) to service the machine.
They are available in 110, 220, European elect, and Pneumatic - I have wool bonnets as well as foam pads, brushes for cleaning carpet and they also make up to 9000 grit papers for polishing PLEXIGLASS and LEXAN airplane windows.