How much have you been quoted mate..... mines sounding like a hover craft at the moment with the windows down.... 
Just less than £220, which includes the part, an hours labour (in Berkshire) and some dismantling in advance to work out which model it is. There seem to be two different possible parts, one from Siemens, one from someone else. No obvious markings on the visible side that we could see, even with a mirror and a torch.
Worth it to get the Silver Bullet back into stealth mode.
You could do it cheaper yourself for about a hundred quid less if you're a confident DIYer. I'm not, but there are guides on the net showing how to do it.
