888Sport has an "average" rating which they fit firmly into the middle of. When we searched they were never the market leader and had consistently second rate odds across the board. Never BAD as such but never good either.
We looked at the most popular European leagues and chose the most high profile upcoming games of the week. We study a mixture of the match odds and also the over/under 2.5 goals markets. As of 17th June, we found the average margin on Premier League and Championship games to be around 5%, 5.13% to be exact.
In the Spanish La Lige and La Liga 2, it was worse, around 6% or again to be exact 5.98% at the games we studied.
Across the rest of Europe, when looking at the German Bundesliga, the Italian Serie A and the Portuguese Primeira Liga it was slightly worse again at just over 6%, (6.17%).
Across all leagues and all games that we studied 888Sport has an average football odds margin of 5.7%.