After my mom died, in her 70s, my dad married a very wealthy business owner. Her daily income was in the neighborhood of $10K, but she was the cheapest person I’ve ever met. She recycled gifts, often back to the person who had given it to her the year before. Her own children told us of getting old boxes of chocolates with two lids put together. Bizarrely she’d stay an extra night in an expensive hotel because she didn’t want to pay an airline for a change fee to go home a day early, completely missing the lack of logic. Needless to say, she and my dad had a prenup.