As a daily driver I wouldn't do it. European cars can get pretty expensive very quickly in terms of maintainence and repairs. If you can do all the repairs yourself it will help but parts are still far from cheap, even from discount web sites. Every time my Volvo brakes (which isn't all that often) my wallet cries. If the A/C is dead and it's a 93 it still might be on R-12 (Freon) and you would have to have it converted probably, more $$$.
As a track car I would say jump on it, gut it, mod it, take it to a road coarse or autox, as a daily driver I would pass.
Auto? how many miles and how much are they asking?
HTH,
Pete