Appreciate the offer but the main reason I don't have one yet is that I promised myself not to buy any more bikes before I move to a new place in January. There's plenty of oldschool mtbs in Germany so I guess I'll browse ebay kleinanzeigen till I find sth with deore dx for <100€ locally :)
What kind and what size oldschool mtb are you looking for, @Sig_Arlecchino? I have a low budget Colnago Maxim (exage 400/500).