Assuming you are stating that no one should be bidding 1b on such an item, and that the max it should sell for is 800m, I shall explain the maths. it costs, on average, 690m to land 2 30s in a row on a 9 int doros. It takes, on average, about 10 doros's. If I value them at 25m each, which is low, that's 250m, plus the 12 30% scrolls it takes (on average), which is 420m. 420m+250m = 690m Then we take the 3 70% scroll I used after that. That leaves us with a 38% chance that it will boom after the 2 30%s have already landed. So, on average, it takes 1.6 2x30% doros robes (690m each) + the cost of about 4.5 70%s. 1.6 x 690m = 1.104b 1.104b + 67.5m = 1.1715b Then we add the price of the last 5 60% scrolls = 120m 1.1715b+120m = 1.2915b. So, on average, it takes 1.2915b to scroll such an item. And the result of the scrolling, in this case, in which I failed only a single 60% scroll, is above average. So, if it costs 1.2b to scroll - and if I even scrolled it above average - why, then, should it cost 800m? ESPECIALLY if a a 24 int bathrobe can sell for 700m+. Where did you pull 800m from?