I've been going mad buying things on eBay again. First I got a Yamaha TX rack with a single TF1 module for £45; not
bad going, and it helps towards completing my TX816 rack. Then I got (another) Korg Poly 800 with reverse keys, for £70; so I can use it to refurbish my slightly wonky one, and sell what's left over. Then I got a Korg Prophecy, for £180; not cheap, but they're rarely seen much cheaper. This I'm really pleased with, 
as it seems like a good substitute for the MiniMoog I sold, as well as being a source of interesting acoustic modelled sounds (so much better than the Yamaha VL-70M, which I could never get anything useful out of). Now let's hope that's the end of my spending frenzy. 