Had someone come out a couple of weeks ago to do a small job.
Quoted £55. Came and did it, all good.
Asked after if he needs my email for the invoice. Crickets.
2 weeks later he’s come back and said it’s £55 cash or £70 with an invoice. “Let me know which works best for you”
I think it’s bullshit. He obviously doesn’t want to declare his income (again, bullshit – pay your taxes) and if he wanted to charge £15 for an invoice he should have said so in advance.