https://community.betfair.com/general_betting/go/thread/view/94082/31727925/with-book-margins-so-tight-is-it-possible-to-win-bookmaking-on-the-exchangeAt least backing / dutching all at [say] odds of under 100 gives a profit - until the outsider scoots in !https://community.betfair.com/general_betting/go/thread/view/94082/31727925/with-book-margins-so-tight-is-it-possible-to-win-bookmaking-on-the-exchange?post_id=561454145#561454145At least backing / dutching all at [say] odds of under 100 gives a profit - until the outsider scoots in !Thu, 23 Sep 2021 06:10:50 -0500