Little bit off topic but I've always been interested in bikes, and RC stuff always came first when the money came in, I had a cheap argos mountain bike job to ride around before I started driving but since that's been sat at uni it's a wreck now (and wasn't really brilliant before)...
I now fancy a BMX but with another year at uni paying accomodation fees etc and no summer job money is pretty tight, question is, if it's even possible, what should I be looking at for a 2nd hand BMX for like, under £75? I might be able to spare that much over the winter season

Biggest hurdle is the fact I'd need something lightweight, since I'm not particularly heavy myself, and that means £££ usually