A lot depends on the odds. There are three main systems that bookmakers use to set the odds: fractional, decimal and American. We did the betting site on the
https://bossaction.com soft platform. And it had all kinds of odds, which helped to target the site to a larger audience. Fractional odds are preferred in Ireland and the UK, American odds are used in the US and decimal odds in Europe and the rest of the world. PayPal incidentally charges almost 3% on betting odds, so keep that in mind when funding your account somewhere.