Uth: EoR if Flush pays 2:1? and a Progressive question

1) Normally flush pays 3:2 for the Blind bet.
If it paid 2:1, the HE is 0.9%.
(Edit: https://wizardofvegas.com/forum/questions-and-answers/gambling/36944-math-of-ultimate-texas-holdem/#post841494 )
What is the element of risk?

2) Progressive: Flop flush or better with 1st 3 cards + your 2 cards
$1 pays flush $100, full house $150, quads $200
(Don't remember straight flush or royal)
What's the house edge?

3) What if Flush pays 3:2 but Royal only pays 100x?
What's the HE?
Edit:
For every 100 the effective payout on a royal goes down, the house edge will go up by 0.308%?

So if the royal payout is $20k instead of $50k then 30k/100 x .308% is 92% lower???
Obviously wrong.
Help with math?

1). How do you get the HE of 0.9%? Flush occurs 3.03% of the hands, so the player EV gain is 3.03%x0.5=1.515%; therefore, the new HE is 2.185%-1.515%=0.67%.

2). Usually, $1 pays flush $40, full house $50, quads $300.

Quote: aceside

1). How do you get the HE of 0.9%? Flush occurs 3.03% of the hands, so the player EV gain is 3.03%x0.5=1.515%; therefore, the new HE is 2.185%-1.515%=0.67%.

2). Usually, $1 pays flush $40, full house $50, quads $300.
link to original post

0.9% HE:
https://wizardofvegas.com/forum/questions-and-answers/gambling/36944-math-of-ultimate-texas-holdem/#post841494

So I should play the $1 Progressive if $100/150/200?

I’d like to get a third opinion on this 0.9% HE number.

The payout numbers of yours are ridiculous high. Of course.