My grandma was a well known cheapskate when it came to spending on others, and totally selfish with purchases for herself. My grandad is blind and has very simple needs. If the food he is served doesn't taste good he just won't eat anything since he doesn't want to put anyone out. When grandma was alive she would read out the supermarket catalogues for grandad to see if she could entice him with anything. Funnily enough she would "forget" to read out the things he liked. Since they lived in a unit at the back of my parents place we could hear grandma telling grandad that his favourite ice creams weren't on special this week. That really upset mum and me so we would make a habit of looking through the catalogues for things grandad would like, then going in and telling him that they were on special, and did he want us to pick any up for him. He would be confused as grandma would tell him they weren't in the catalogue, but we were saying they were. Took a few months of this before grandma would read out the catalogue in full. But if you look in their fridge or pantry you would see brand name liver pate, smoked salmon, water crackers, etc that grandma liked (she liked to eat well), and cheap brand chocolate biscuits, cheap (no taste) ice creams and cheap cereals for grandad.
But it would appear she had been like that all her life. Mum used to tell stories about how grandma would buy clothes for her four girls (mum is the middle child of four girls and one boy, the boy is the oldest), particularly underwear. Four teenage girls of varying ages were made to wear the same size bra, because grandma didn't have time to get everyone fitted properly. So if it was on special and looked like it would fit the average sized girl, they all had to wear it. Problem was mum's youngest sister had implants in her late 20's, and mum has been through 2 reductions and is possibly going to have a 3 at some point. Do you really think these 2 girls would be wearing the same size in their teen years. Mum said when she got fitted for her first bra, she didn't know they were supposed to feel that comfortable after all the years of wearing the wrong size.
Grandma wouldn't spend any money, as she was saving it for a rainy day. Both her and grandad needed knee replacements (both knees for both of them). They got put on a waiting list, but it was going to be a very long wait (probably up to 2 years). It took a month for my aunties and mum (not my uncle) to convince them that the rainy day money that was in the bank (almost 6 figures) should be used. Grandma didn't realise this was what rainy day money was for. She always said she was saving for a rainy day, so that was why they bought things on special, and frequented the op-shop (thrift or charity shops), and used coupons for cheap holidays. In the last couple of years of her life she and grandad (after waiting 3 months for their knee operations instead of 2 years) went on holidays every 6 months, bought air conditioners for each room in the unit, bought new televisions that were big enough for grandad to see something, and also had subtitles for grandma to read (deaf as a post). They improved their lives, like rainy day money is supposed to do. When grandma died, they still had a large sum in the rainy day account, plus still had investments, so grandad can live comfortably for the rest of his life, even if he does have simple needs.