I’ll tell them on their death bed that I will totally sell their used figurines for 40 bajillion and that this is a reasonable price.

Loosely related: if your relatives ever give you anything to sell on Facebook Marketplace or something, they will insist on some sort of insane price which will not move. You lower the price dramatically and it finally sells after weeks and weeks of just sitting there. Knowing that your boomer relative will be angry that it sold for $25 rather than 40 bajillion dollars, you lie to them and say you sold it for $45. They bitch, shit themselves, scream and cry, give you a hard time all throughout Sunday dinner and then claim they’re going to sell their own stuff from now on. They never sell anything, or even attempt to do so. The end.