He is 17. I know about the coat thing Both DSs shiver their way though winter like every other teen. I never bothered before as he wasn't interested, I just gave him money for clothes when he went shopping or took him out to buy things. I thought at 17 he should learn about budgeting. He does that alright, most of the money is sitting in his bank account. Apart from the bit spent on T shirts. It hasn't rained much lately, now that it has he will get wet feet in his holey shoes. Perhaps that will make him part with some money.
Well he used to get £30 a month pocket money. I added up roughly what I thought I spent on clothes a year and increased his PM to £60 a month. That has to cover phone (£6 month Tescos), entertainment and haircuts as well. He's good at not spending money. Always seems to forget his wallet when I take him out. DS2 is 15 and I'm just thinking of doing the same. He has school uniform so probably needs fewer clothes but is growing 1cm a day at the moment.
I suppose you should call it an allowance rather than pocket money. We also live in a public transport free rural area, but he does have a part time job. It's only 5 hours a week NMW and I hardly think he should use his meagre hard earned cash to support himself. It all goes in the bank anyway so will help at uni. We did all the driving to and from work for a while, even though not cost effective I felt it was useful to him to do the work. Good for his confidence as he is very shy. He can drive now so borrows my car. He is also working very hard at his exams.