Only thing I would note is that it's been for sale, on and off, at around that price for months and months - ie since the start of the year or there abouts. Might have been somewhere nearer £5k though from memory.
Last time it had the standard AMG exhaust (which is what I'd prefer, and I am sure most others would too), plus the wheels were slightly different - I'm fairly sure the lips were polished believe it or not!
It's possibly worth paying slightly more (£1-2k) for a lower mileage, more original one. Just IMHO