There are 2 ways of looking at it, first have a look and see what your bike would cost you to buy today, both private and dealer sales. And then have a look at what you would get part ex for it. Try "We buy any bike" for a pretty crap price. You may get some where in the middle, but you can haggle if you have pictures to show how clean and well looked after your bike was.
But first of all make sure that your covered fully comp for when some one else rides your bike. Depending how the insurance is worded, you may only be covered 3rd party when some one else is riding your bike. In which case you may receive nothing for your prized possession. If this is how its worded, then I guess he will be really sorry and will do the dishes for years to come. :-/
