I've just found out from a friend of a friend that I am paying my DD's guitar teacher £2 more per private lesson than other students (same teacher).
AIBU to ask the guitar teacher about the difference in price - or could there be some kind of perfectly reasonable explanation?
I would feel a bit of a dick saying 'but X only pays you £X' if there's a good reason and then the guitar teacher would maybe think I was being a bit silly and I would be embarrassed!