How much does bookmaker's margin affect lay odds?

[Mike_25]

I have years of experience reading bookmaker's odds correctly and predicting outcomes as closely to 50/50 for profitable betting. From that I notice the bigger the margin bookmakers take, the lay odds they quote tend to be higher compared to smaller margin bookies quoting for the same event. How true is that from your experience and what impact does the bookmaker's margin have on the lay odds they quote in your opinion? I think the bigger the margin, the more they quote in their favor.

 

[Hasan77]

The bookmaker's margin can have a significant impact on lay odds in a betting market. Lay odds are the odds offered by a bookmaker for a selection not to win. They are the inverse of the corresponding back odds, which represent the odds for a selection to win.

The bookmaker's margin is essentially the built-in profit margin for the bookmaker. It is the percentage by which the total implied probabilities of all possible outcomes in a market exceed 100%.