Fairlay review Contents Fairlay is a crypto betting exchange. The essence of a betting exchange is that you don’t bet against the house, you bet against other users. Fairlay sets up the market, matches bettors against each other and pays out the winner with the losers’ money. For this they take a 2% commission from the winner which is equivalent to a 1% house edge; much lower than other sportsbooks. Their site takes a bit of getting used to and has some room for improvement.