I bought the 486 version of the Zeos Contenda a few years back for around $40, IIRC (including shipping, I think it was $20 or $30 before shipping was added on) and broke it trying to reverse-engineer the floppy connector in an effort to get stuff on and off the computer without using a serial cable. And since then, I've had an eBay search saved looking for one that's a decent enough deal AND has the floppy drive with it. Today, I found it for $60 shipped!
http://www.ebay.com/itm/291384828908
Granted, it's the 386 version and it's missing the track ball and lid latch, but I'm sure I still have all the parts from the broken machine in my old room at my parents' house (I did throw away quite a few things, but I don't think that was one of them because I had it put away in a box before I started all that) so I think I'll be able to refurbish this one pretty easily (and IIRC it was a pretty slow 486 machine anyway, so I doubt I'll miss much due to the new one having a 386).
http://www.ebay.com/itm/291384828908
Granted, it's the 386 version and it's missing the track ball and lid latch, but I'm sure I still have all the parts from the broken machine in my old room at my parents' house (I did throw away quite a few things, but I don't think that was one of them because I had it put away in a box before I started all that) so I think I'll be able to refurbish this one pretty easily (and IIRC it was a pretty slow 486 machine anyway, so I doubt I'll miss much due to the new one having a 386).