Hi Greenfort
Where are you looking, UK, USA or elsewhere?
In the UK it depends partly on whether you want dealer back up or not. Overall it sounds like you are after something similar to what I was, not the pristine, restored at great expense, almost concours examples, and not the complete basket cases needing total restoration either. Unfortunately there's not all that many cars inbetween (or at least, not that come up for sale)
I paid ?3500 for mine a few months ago, although I think it was probably worth a fair bit more, and have seen similar cars priced around the ?5000 area. For that amount of cash you should expect something that runs, has reasonable bodywork, and no major jobs that need doing (esp replacement chassis, respray or engine rebuild - all costly) However, you should leave some of your budget for fixing things that go wrong, as they invariably will, even if the problem hasn't been noted previously.
You will probably also not get a totally original example for that sum, unless its in poor condition, so expect a variety of previous owner modifications (read: bodges
) Some of these will be good, and enable the car to work better, others will leave you wondering what on earth the PO was thinking. So my guess at a fair price for a fair-good condition +2, in the UK, with a few niggles, would be ?4000-7000 varying depending on the exact condition. (Anyone else have different ideas??)
I don't want to put you off though. I've had my fair share of problems, and my car is far from perfect, but it is so much fun! Nothing else I've driven has ever come close to the +2 in terms of sheer driving enjoyment.
Good luck!!! Also try to find someone who knows the cars to look at any you find if you're serious about buying...
Rick