Bitcoin is suffering a massive drop in price today. It's almost losing the 27,000$ price range back to the 26,000$'s, but you still have 2 days to wait and see what the tendency is before placing your bet. So far the 27,000$-30,000$ bet seems the most reasonable alternative, ~~
I try to place bets on the last day of betting to have a better idea about the market condition. It helps to get some confidence to win the bet. But it is difficult to make the prediction with confidence when Bitcoin price becomes unstable like this. I just placed a bet on $27.5k to $30k price range, I will place another bet tomorrow if Bitcoin price still shows high volatility.