Actually, there is no best way to calculate the final price in the Pick the Price game.
But you can try this:
Before you enter the amount, try to check the price history of the item you want to predict. You can also consider the time of the auction. There are times that the winning price is too low and sometimes it is high. Compare the times when the winning bid is low or high and sometimes you can also consider who are the bidders.
You can also observe first the way some bidders bid. Some uses the Auto bidder and some don't. And sometimes it also depends on what items are being auctioned.
All these are factors to be considered but most of the time, it is LUCK. Or you have the gift of predicting the right price.
Actually, there is no best way to calculate the final price in the Pick the Price game.
But you can try this:
Before you enter the amount, try to check the price history of the item you want to predict. You can also consider the time of the auction. There are times that the winning price is too low and sometimes it is high. Compare the times when the winning bid is low or high and sometimes you can also consider who are the bidders.