Really? They have quite low limits on eSports when compering to other sports but I made bets way bigger than that even on low tier tournaments. Did not try it today but my limits usually get triggered around 20mBTC and that is only for handicaps. Over maps or ML go at least double that. In addition to that you can always make eSports bet trough that dedicated part of Sportsbet page. When you access eSports trough there you are placing bet with slightly different odds (using other odds provider) and I believe you have new limits. You also have much more markets to chose from.