In my mind all it really is is a nice looking w124 that's 15 years old, with no MOT or TAX, and to top it off it's a LHD. Ok, it's got a great engine with a lot of 'Stonk', but even that has done close to 200,000 miles!
It might be worth something to someone, but I don't think it's worth half the price of what he's asking, not unless seven and a half grand is just loose change to you. Sorry.