B-right-on
Living the dream
For £1200 you’re probably not going to get a better used car, most at the cheaper end will have something about to break/wear out. Better the devil you know etc.
Unless you just need an excuse to get a much newer car then I would just get it fixed.
This. Even if its the more expensive quote, then it's hard to see what you can get for £1200 and you'll never know the history.