Hi there Divino,
When I started playing this game not too long ago, it wasn't long before I went for those VIP Levels. I was just as frustrated to find out what you're describing.
It wouldn't be that big of a problem, if FREE players didn't get 2 resets for 50 both. If the first was 50 and the second a 100, you'd get the gist and prolly realize that that particular advantage of VIP Levels is not really worth it. Combine that with the fact it's not mentioned anywhere and that makes us the fish that got HOOKED.
I went full sarcasm and condescension on Customer Support when I found that out, but long story short is, "Post it on the forum and if players support it..." You get the idea. I talk about my findings on support in a different thread.
Now, I have to point out that you got your numbers slightly wrong. You get 2 x 50 and then 4 x 100 and that's my extent of testing it so far. That however doesn't mean you don't have a point.
So I recommend changing the thread name to describe this exact issue so people like you and me can find it easier and voice their opinions.
However, you'll have to accept that your suggestion of flat cost is not gonna happen. Either never or once profits go so bad that they won't have a choice, but by that point neither of us would care. Everything else (Heroic Resets, Midas Touch, Store Refreshers) work the same way with increasing cost. Think about it from the developer's point of view. They didn't make the game out of love for the genre or love for gaming. It was their job and they made it for money. So, if we want this kind of thing changed, we'd have to meet them halfway.
My suggestion would be more like 3/4x50 6x100 etc. Basically keep the price increase, but decrease the scale. Cause you're right, right now it's a bit daunting.
In reality however, what I see most viable from their point of view would be just a 20% decrease. 2x40, 4x80 etc.
Best of luck