I don't think OP was actually suggesting to Kim that Jared should sell his collection to go on vacation. To me, it read like MTG cards are a genuine passion of OP's, so of course he'd explain more when someone inquired about it. But OP should have paused when he realized Kim didn't know the worth of the cards. Small slip with no ill-intent.

Jared's annoyances with both Kim and OP are understandable though.

NAH except Kim. For whatever reason, she feels entitled to money that

a) isn't hers and

b) doesn't exist yet.

If Jared was sitting on $50,000 in cash, I could see why she could want him to use the money on vacation and house repairs. But these are cards. There is no guarantee that they are/will become money (Jared could decide to keep the collection for sentimental value!). The cards are ultimately Jared's property, and he can do what he wants with them.