I was assuming this 2011 was a late SC58, if its an early SC64 it may be worth £4,249.
I'm only giving an opinion here, the real worth of anything is whatever the market will bear and just like the price of tea in China that can vary month on month. If you want the best price then ask for say £500 more than your bottom line to leave the buyer some feel good haggle room but if you get top dollar then happy days, if the buyer fails to reach your bottom line sell it elsewhere. It is a popular motorcycle in the sports tourer class and, as with anything else, if it proves difficult to sell you're probably asking for too much.