Is a $500,000 Black Lotus reasonable compared with a Pro Tour grand prize?

I think they figure that one card for VINTAGE format is worth the entire year's grand final prize, because about 90% of the time, if you start with Black Lotus in your opening hand, you are going to win the game in Vintage.

What do you think of this?

Is a $500,000 Black Lotus reasonable compared with a Pro Tour grand prize?
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