The previous/original owner of my car paid a chimpanzee to repair damage to the paint on it’s rear n/s wing, for it to end up like this:-

It doesn’t stand out too much but can be seen quite easily if you look more closely.
Needless to say, I’m not going to leave it as it is, so am looking for recommendations for a decent, fairly priced paint shop to take the car to.....preferably in the West Midlands (Birmingham) area?
Just to get an idea of the max I’m likely to pay, I took it to Sytner Solihull for a quote:-
Repair: £308 +vat (That was supposedly discounted at £40/h)
Paint & Materials: £225 +vat
Not being too “au fait†with paint shop prices, I’m hoping that this really is a top price quote?!
Any info, advice or suggestions would be most welcome!