When Miles asked Ben for 3.2 million dollars, all of us went upset and started questioning: "Why, oh why!?".
Then we discovered that amount of money was double the price Naomi offered him, and the exact amount of money Bram offered him.
So, all of us came back to the sea of tranquillity and explained that strange, not-at-all-round price: "It was double the price!!"
But... why 1.6 million dollars?!? I feel like I missed something...