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However, I think if those who placed their bets on "$12,001 - $21,500" region requested to cancel their bets, their request should be granted.
I think it was an obvious typo. There can't be overlapping ranges because there would be 2 winning outcomes. I think the 90 odd people that bet on it before it was corrected
were trying to exploit the mistake.
Maybe not all of them. Look at this reply by @Text to my post:
There's something new in the ranges you can bet on regarding BITCOIN PRICE - DECEMBER, and I don't get it.
Which range is the winning one, if they price, say, $19,700? Was it a mistake or intentional, meaning that both ranges win? There are also other ranges, like "$19,001 - $19,500", "$20,001 - $20,500", "$18,501 - $19,000" etc. sharing this uncertainty.
If you choose the range of $ 12,001 - $ 21,500, this is the safest zone but the lowest pay-out because it is obvious that more people will vote here compared to the short-range but you have high odds and luck when you choose the right one with the closest price.
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Apparently, it wasn't that obvious that it was a typo, and I think that people who placed their bets on the "$12,001 - $21,500" range at least deserve an email notifying that the range was changed.