While their servers, customer service and financial transactions take place on the Kahnwake reservation, so far as I know, their web site states "Sports Interaction is owned by SIA Ltd., 4 Pitman's Alley, Gibraltar. All transactions are conducted with SIA Ltd., Gibraltar." which suggests that they set up a shell holding company as head office for possible legal reasons as well as processing funds to Europe out of Gibralter.
As Doug said you don't really need more than 3K given their limits.