If you're wanting to spend £4k on a trophy, buy mine. http://www.ebay.co.uk/itm/130813554721?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
The one you listed has no mention of if the dampers have been done and the advert on a whole isn't very comprehensive.
I am located in Manchester...
Sorry, But I don't understand why you wouldn't check for all of those. I hope you didn't pay too much for it. Things like this annoy me, people buy these cars that haven't been looked after, and things are wrong.
All in all, I feel your pain. But I hope this is a lesson learnt and you get the...
IMO, I would do what you suggested in another thread, just buy the cup dampers for now, and wait for another set to come up if you still want them.
£50 each is crazy cheap.
Ben is a sound guy, He helped when my gas seal went after 6months/4k as well.
Only cost to me was sending them off via courier. No real hardship though.
Hopefully you can get them back and on the car once and for all.