The prices do seem to be very extreme these days.. some of the rougher ones I honestly wouldn't give £500 for now, I think when you've owned one you realise the bangers are just not worth the amount of constant hassle and expenditure any more... There are still some nice ones out there though, and as 'Red' says, the nice ones really are in low numbers. These cars can be simply valued by the owner at what they 'deem' it to be worth... 15k tho.. lol
I still enjoy servicing them and having a little fun 'testing' them and bedding the brakes in... some of them are being run on a very tight budget unfortunately..
I don't know if it's just the ones that I end up trying to resurrect, but the state of some of calipers is just shocking... doesn't help that Alcon won't make any more either... will have to start stocking an alternative caliper for the ones I just can't fit back on the car anymore... :/