If someone buys it that doesn't do their own spannering then replacing the cylinder base gasket would cost them quite a bit so you would need to reflect that in your asking price.
Have a look through the For Sale sub-forum here and completed listings on eBay to see what sort of money Raids make but, bear in mind the oil leak.
I can provide a good home for it!..it would be amongst friends (raid friends) ...why are Raids always in portsmouth!...3rd one ive bought from that area!
FMF end can (£350 new, no option when the old one disintegrated a couple of days before I was leaving the UK).
Tank is pretty good. No leaks, a couple of tiny marks and one 20p sized rusty patch.
Recent chain/sprockets.
Stainless front brake hose.
Good Conti TKC80 tyres.
Difficult to judge prices from eBay as so much depends on condition but I think without the oil leak it would make around £1000. As it stands I think £700 is about right. Might haggle a BIT around the MOT.