When you're first getting into the resale game, it can really be hard to get your head around the dues, who is typically responsible, and even more so with some of the UYs. It's still weird to me that a buyer of a December UY contract with no points available until December of 2026 would generally be expected to reimburse the seller for the dues that were billed for those points almost a year earlier. Gets less and less weird the earlier in the calendar year the UY is, but it is still not very intuitive when you're just getting into this.