My late Mother-in-Law was fanatical about money, despite being very comfortably off.
At Christmas and birthdays she would give very small gifts and always left the price tag on, but she expected to receive good quality and expensive gifts from her children, because, as she frequently reminded them, she had given them life.
One Christmas, I crocheted a lovely evening wrap for her, as she had to go to some function or other to do with her Parish council.
Some weeks later, my SIL asked me where I had bought the wrap, as MIL had being touring the stores trying to find out how much I'd paid for it.
I replied that it was handmade, but the yarn had cost such and such (it was VERY expensive!). I never heard whether she was satisfied!
The crunch came when I was admitted to hospital for emegency surgery, and she looked after my two baby sons for the afternoon until DH could get home.
On the day I was discharged from hospital, she handed me an itemized bill for two jars of baby food and 1pint of milk which her own grandchildren had consumed!
I was going to buy her a 'thank you' present for looking after them, anyway, but after that, I kind of forgot.