Bets with lower implied probability are given a positive value. For example, a bet placed at +400 odds would profitR$400 on aR$100 wager. The positive value indicates that the odds are plus money  and return more profit than the amount risked on the bet.
A team with +250 odds would pay $250 for everyR$100 wager (orR$500 for everyR$200 wager, orR$750 for everyR$300 wager).