Is this question:
Will an island be valued at $1Bn?
Or: Will an island be sold for $1bn?
Or: something else?

I guess Australia is valued at more than $1bn so presumably the whole island has to be sold in one sale transaction otherwise it is already true at time of creation.

I would suggest clearer specification of the question is better if you want to attract people to bet on it.

@ChristopherRandles 🤓

What?

No way

It’s gonna happen

Wtf is this question

Maybe