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Full Rankings
# Book Grade Best Price % Worst Price % Sides Scanned Best Price Share
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Best Price % Over Time
Top books — daily best-price percentage (30-day window)

🔬 How We Score

What is "Best Price %"?

Every scan, we check every book for every game side (home win, away win). Best Price % = the share of those sides where that book offered the single best available odds. Higher is better — it means that book consistently beats the competition.

What is "Worst Price %"?

The share of scanned sides where this book offered the worst available odds among all books we track. A high Worst % means you're regularly leaving money on the table by staying on that book.

How often do we scan?

5 times daily (8 AM, 11 AM, 2 PM, 5 PM, 8 PM ET), across 5 sports (NBA, NCAAB, MLB, NHL, NFL). Each scan hits 17 sportsbooks simultaneously. Data accumulates from every scan for trend analysis.

Why is Kalshi different?

Kalshi is a prediction market, not a traditional sportsbook. It can be the best price on both sides of the same game simultaneously — something traditional books can't do. Treat its grade separately from standard sportsbooks.

A+ Best on ≥40% of sides
A 25–40%
B 15–25%
C 10–15%
D 5–10%
F Below 5%