I had a D80 a while ago, and I did get some nice images From it. Good point it has an internal motor. Bad points not too good at high ISO and no video function.
So long as you don't need to shoot at high ISO, and don't need video. Then if it's cheap and in good condition, go for it.
D80 with 18 - 70 for £119 might be worth it, if it's all in very good condition. But there again, for not a lot more money extra you could probably get newer better kit.