Given that it was "found in the garage" and all the cold/damp implications that could encompass, the bridge, tuners, etc don't look any more rusty than any similar vintage bass might look. That would make me think that the electrics haven't adversely suffered either. If they have then they're very easily fixed. The actual condition of the body and neck looks to be very good considering.
I'd be happily pay £150 for that, maybe £200 if I really was after one. For me personally that's the best colour combo and I really like the look of it.
Best of luck if you go for it.