New graphics card, why are some like $24000? A good card?

My graphics card stopped working and I want to buy a new one.
I care so much about my stuff, so I really want the best quality.
Why is it that some cards cost like $24.000? Are they of an extremely, unbelievable quality or is it just like the stupid gold and diamond covered iPhone that costs way too much?

Also I would like a model name, if you have one certain in mind. It doesn't have to be cheap, I can buy it used so that's good.

Those cards are specially designed for extreme high end rendering like editing movies.

Best value for the money at the moments is the Nvidia GTX780.

Beacuse some people have got much money

GTX 760 will play any game on high settings. That's the best value for money.