All 8 NC betting apps & promos Estimating the true maximum cash value of these offers Sportsbooks often promise big bonuses through first bet insurance offers or deposit matches. If you optimize your bonus bets by betting plus-money underdogs in the +300 to +500 range, over the long run you’ll convert about 60-70% of your bonuses into cash. This means that you can’t just deposit, get a match, and then immediately withdraw. It’s a big investment, since most