How much for a 250 kicker engine

as for anything  second hand the only monetary value thats set in stone is its scrap value and that can change daily.what you value a item and what someone will give you can be very conflicting.when i put something up for sale which is very rare i start at what i want if it sells great if not i leave it at that.engines what are you getting if not seen and heard running may be as bad as the one you are replacing ,would take the stranger word its a good one mate as you part with £500.as with the superdream the market for parts is a small niche market as with bikes over 20 year old most do not want to throw hundreds of pounds on them .i found out it was far cheaper years ago to replace than rebuild a vehicle engine but thats when they were readily available .but time turns things round that what once abundant is no more.the superdream engine Gee may be worth £500 or more the problem is finding someone that wants the engine that much