Wanted: Outdoor activities Canoe

Hi. We have 20 year old Pyrana Prospector 16' Canadian canoe which we would like to sell but have no idea what it is worth! It has a few signs of wear and tear, having been used a lot in the past, but is otherwise in good condition and ready for immediate use. We are in Eynsham near Oxford and on the banks of the Thames. If you are interested I could send some photos? Steve Holmans