I picked up one of these today:

ESI RmMI/O
1 in 2 out USB MIDI interface
http://www.esi-audio.com/products/romio/

It appears to be discontinued, and I really don't know much about MIDI, is it still used much? And if so, what seems like a reasonable asking price for it? There's only one on eBay and I think the vendor is a bit optimistic, and I have no way to test apart from seeing that it powers up if plugged into a USB socket so can't offer any warranty.

later - I've listed it starting at £1.99 plus P&P, we'll see what happens. Also listed the Canon lens I mentioned a few days ago - already has bids on it - and some other stuff.

http://www.ebay.co.uk/sch/marcusrowland0/m.html