I once did this for the Grey felt hat Pikachu when it was going up a ton. I posted on my local FB group that you could literally get a very high end couch for as much as the Pikachu. And the comments were wild.
“But a couch won’t make me money”
“I can’t hold 4 couches in my hand”
But the thing is, my wife and I have been watching home renovation shows recently, and it is 
cra:clap:zy how much you can do to your home for $10k. And the home would appreciate for a much longer term and way more steadily than that card.
$10k is a crazy amount of money for Pokemon. I’m of the thought that I don’t think that any card should be more than like $1k. But I’m talking like primo primo cards. And maybe $5k if it’s low pop or old or whatever. But even modern cards, paying $2k on a PSA 10 copy of a card that literally just came out and will be out for 2 years is absurd.
Also I just realized that it’s tax season and people are prolly getting thicc refunds back and they’re spending it on pokemans 