Best price: Lions pay $2.10, Patriots pay $1.77 (the best of 6 bookies we checked). $100 on the Patriots returns $177.
Fair chance (our read of the prices, with the bookies' cut taken out): Lions about 5 in 10, Patriots about 5 in 10.
How much the bookies keep: about $4.59 of every $100 bet on this game.
Since betting opened: the price has barely moved.