You will winni the long run if you are actually getting value. Before you start betting you should start pricing the fights yourself to what you think is fair. They should add up to 100%. If you can get a price bigger then ur 100% u should add it to a sheet and keep track of how you do over say 200 bets. If you are up start betting. If your down work on your pricing. The majority of people will lose about 8% of their total stake. If you are playing round betting u will likely lose more.