I already ranted about it, but : who cares about the fees ? What's important is the prize/fee ratio, and it looks within the standard tournament norm (not much lower, neither much higher, if a sizeable number of players take part).
Yes, a $1000 entry is effectively barring poor people from coming, so what ? A $10 entry is barring very poor people from coming because of the loss of time and money. Chess is a game for the rich.
Now for the payout ratio calculations, the problem is what you mean by that. Total prize fund / personal entry is not a good measure : payout ratio means in my book total prize fund / sum of all entry fees.
Imagine I hold two tournaments with $1 entry in both, and a single prize section ; tournament A has a single prize of $10 for the winner, but is limited to ten participants, while tournament B has $10, $5 and $2 prizes for the top 3 but has a hundred participants. B has a higher "payout ratio" as calculated by MC's norm, but if you go there for the money A is your choice assuming the strength in the same in both tournaments. (If you don't see why, consider the case where there are only two players allowed in A, whereas a billion players are competing for B).
@Smyslovfan
The risk is being borne by Millionare Chess, LLC, a company incorporated to organize the tournament. According to the information that I can find, Amy Lee is funding the company. Her liability is limited to the amount of money that she has provided to the company. The question is: If there aren't enoough entrants to cover the costs, will Amy provide additional capital, or will the company go into bankruptcy?
It's no different from any other business venture.