I got my PPL at 17, Part time job at sainsbury's, got around £245 a month from that, excluding overtime, Was enough to cover 2 hours over 4 weeks at my club, but restricted me from doing much else with my time which got frustrating after a while considering the amount of hours I was putting in for work, so was regularly running to the bank of mum and dad.
Frustrating stuff!
Cheers, Put