Quite right AIBags. I really would steer clear of KwikFit Mobius. I applied for a job as KF manager once and the Area Manager told me that a manager's priority is to always increase the branch's weekly sales as that's a reflction of the manager's performance. The weekly figures come before customer service.
The jobs on the advisory sheet are straightforward and shouldn't cost as much as you were quoted. As AIBags says, go to a local independant repair shop preferably operated by the owner. They usually do a good job for a fair price as you are their personal customer, they want you to go back, and they want you to recommend them to others. The price should be much less than KF.