My sibling had been a cheapskate from the time he found out how to spend money.
He would buy candy and hide it away so the rest of us couldn’t find it.
If we actually bought candy, we had to share with him or he would tell our mom, but he never shared his stash. Twenty years later, he was still cheap, and would use someone else’s stuff before using his. He had no one to use when he had to buy a new HVAC system. He asked my fiance, who is an HVAC worker, what his opinion would be for a new HVAC system. My fiance told him about various nice HVAC systems that were legitimately efficient. When John then started giving him quotes on the price, my sibling asked if he couldn’t reduce the price by 50%. He was sure my fiance could get it cheaper if he said the HVAC system was for us! John told him he wouldn’t do that. Two weeks later, my sibling called and asked my fiance if he would actually install his new HVAC system for him. I tried to talk John into charging him to do the replacement, but he said my sibling was family and refused to charge him. When John got to the house, he almost cried. My sibling bought the cheapest HVAC system available, and it wasn’t even strong enough to keep his house sizzling or cooled. John almost refused to install the HVAC system, knowing my sibling would blame him the first time something went wrong with the furnace or the air conditioning unit.