Bookmakers split into two species. Sharp books run low margins, accept large stakes, and never ban you for winning — instead they use your winning bets as information and move their prices. Their odds are shaped by the smartest money in the world, which makes their closing line the best public estimate of true probability.
Soft books are the household brands: higher margins, heavy advertising, generous sign-up offers — and swift account limits for anyone who wins consistently. Because their prices follow marketing logic and recreational money, they lag the sharp market and drift out of line, especially in smaller leagues and around team news.
That gap between the two is the entire basis of value betting. When a soft book quotes 2.30 on an outcome the devigged sharp market prices at 2.05, the soft book is offering more than the true risk costs. You don't need to out-predict the market yourself — you need to notice who already has, and who hasn't caught up yet.
Every value flag on TipsAudit is exactly that comparison: soft price versus margin-free sharp price, timestamped before kick-off, then settled against the close so you can verify whether the edge was real.
See how we apply this on every match in our methodology. Methodology →
See these ideas at work in our public track record — every call logged before kick-off, losses included.