Be very very weary of garages that charge cheap rates, £60 to do all 4 is too cheap IMHO, rears are easy but fronts are hubs of job to do properly, plus you'll need an alignment afterwards.
I know a mate that went to a garage recently (against my advice
), to cut long story, they fecked up big time mainly cause they're useless & its so far cost him £750 in fitting & repairs by another garage, now at audi for other checks, going to court by looks of it & thats not end of his costs yet, this was for fitting coilovers.
So you've been warned, just check everything is as it should be fella.