I pay my instructors more than the average UK rate for flying (but I still don't have anywhere near enough of them!). They also get paid , albeit a slightly lower rate, for long briefings. All students understand that paying for those briefings means they are done correctly and not rushed and that actually saves them extra flying costs. My instructors also get a paid a different rate for any extra ground school towards the writtens, but students very rarely ask for that...........