buying a delta

hi guys, i,m new on the forum due to the fact i would like some advice on buying a delta. ive got a chance of buying a 1990 8v. its left hand drive and done 60000mls. its got no service history but is in very good condition, the only rust spots are around the tail gate hinges. the paintwork is monza red but is very faded, could do with a re-spray. the drivers door electric window is u/s and its got a bad oil leak all down the front of the engine and i think its coming from the cam cover and running down. its got no mot, it failed on the brakes but the lad has put new drilled and grooved discs on the front. it has got an un-marked leather interior with red piping, 18"bbs alloys with excellent tyres, oh and the turbo boost gauge dosent work. how much do you think wud be a good price? cheers pete.