Service actually ended up costing £267 on the day, although I'm a little suspicious that the brake fluid change didn't actually happen. I was expecting replacement wheels on the same day and I'd asked for a tyre rotation, but as the wheels hadn't arrived the tyre rotation was left until the the wheels came off for replacement. I could certainly be wrong, but I thought the wheels needed to come off to replace/bleed the brake fluid. I could also just be paranoid after experiences with other (non Mazda) main dealers that didn't carry out the work they said had been completed.