Quote from DiagonalSpread:
Why is it so hard to believe there is an imbalance of buyers and sellers?
What's hard to believe is that there is an imbalance of prices.
Why? Because in the time it took you to ask us how many contracts to trade, someone else would have pounced on it (because hey, free money), and the resulting volume would have driven the price back where it belongs.
Nobody is in the business of giving away free money, least of all market makers with razor-thin profit margins.