reason for odds difference in bookmaker

A sportsbook is free to set its odds at whatever it thinks are the best, whether it operates online or offline. A bookmaker will frequently establish the odds based on the match's expected outcome and the amount of money they have staked on both side of the wager. As these two characteristics might vary from one sports betting website to another, there are differences between sportsbooks online.
Despite the fact that odds vary between betting operations, the variation is typically small. It is uncommon to discover a wide range of odds for the same wager.