To be frank, that's what some authors do to push their sales and get to the top 50 anyways, even without loss if you're elite, so it's legit.
I don't know who told you that or if it's only some random assumption but... I wouldn't invest $50000 just to reach the top 50 and most of the buyers don't even know what's behind the marketplaces. You can be 1st or 5000th, you can have 100 or 10000 sales, a good product will have high sales, that's all.
As a side note, cheating the system is not allowed and by doing so to reach a top place, there are high chances to be caught.
Anyway, this is getting off-topic and from what I know, only earnings can be withdrawed, not deposited money as it was already said.