Dd1 wanted a crazy expensive prom dress and I would not pay for it. I said she could have $xxx based on our family budget and taking into account the cost of average dresses. She could have had a nice outfit with what I gave her, but she chose to add about 200 bucks of her own money. Wasn't my favorite choice for her, but she was working, paying her own car insurance etc. so she knows the value of a dollar earned.