Permabanned
I'll pass. Disregarding the crazy prices at which you might actually be able to buy either one, and looking at the official retail prices for the founders edition ones:
3080 - £649
3080 Ti - £1049
Is the 3080 Ti faster? Of course. Is it £400 worth faster? Nowhere near.
Same with the 3080 to 3090. Same as the Titan/Ti pricing in previous generations. Obviously they are over priced but its always the same at the ultra high end of anything. You are paying a premium to get minimal gains and its not meant to be value at that point just bragging rights.