As someone contemplating selling one, that is a difficult question to answer.
There are loads on eBay and autotrader at the moment with some fairly dramatic price fluctuations. Lots of dealers asking 4 1/2k+ for an 08/09 with over 10k miles. Probably why there's still loads on there. Maybe with all the mags singing the praises of adventure motorcycling as the only growth market, the dealers are hoping to make a killing in the spring?

I tentatively stuck mine on UKGSER at �3750. It's a black 60 plate, 10k miles, DNA stage 2-3. That was the cheapest price I saw at the time. Had a couple of nibbles but nothing concrete. Now I haven't advertised widely but even so, depending on how much you like your mate I would be looking at not paying more than 4k.

Just MHO