That is a very good question, they used to trade at £3K+ even for a none to pristine one, there always seems to be lots of interest in them. Compare them to some of the Chinese stuff around & they are still a very good deal, however the last road going one I know of went for £1800 which really is very depressing.
You're surely not fed-up with yours before you get it registered are you? Or if it's for insurance purposes £3-3.5K
Alan...