A share price of 0.25 means a 25% implied chance and pays 4× if it wins (1.00 ÷ 0.25). A price of 0.80 means 80% implied and pays 1.25×.
Yes and No
The two sides always sum to about 1.00. Buying No at 0.20 is the same view as betting against a Yes priced at 0.80.
Why prices move
Prices reflect live trading and, for sports, the live score and game state. They are estimates derived from market activity and event data, not guarantees.