deadley: They did not get 25-50% profit margin.  You calculated the profit margin with just the BTC and Euros they received, but they also received other fiat currencies like USD and CNY.  From their whitepaper, page 3:  "We accept fiat currencies such as EUR, USD, CNY as well as Bitcoins, and all our games are with licensed providers."  I realize that they did not list how much they received of the other fiat currencies in the whitepaper, but they DID receive them. If you were able to add in the amount of currencies besides BTC and Euro they received, with a total profit of 2150 BTC, their profit margin would be lower.