- Polymarket
- Polymarket is an order-book market: the price is whatever two traders agree on, and a share that settles at $1 quotes as a probability directly.
- Polymarket's taker fee is a fraction of a percent, which makes its headline quote very close to the all-in cost and often the cheapest of the exchanges in the middle of the price range.
- Polymarket runs deep liquidity on headline games and much thinner books on the rest of the slate, and its player-prop coverage is still filling in — check the size behind a quote, not just the quote.
- FanDuel
- FanDuel is a traditional sportsbook: it sets the line and prices both sides with its margin included rather than matching you against another bettor.
- FanDuel's margin is inside the price, so it is charged on every bet regardless of the result.
- FanDuel prices a broad US player-prop menu across the major leagues.