In the past, paying $ 20 extra provided players with things like exclusive cars, but the true allure was earning double credit forever. (waypoint.vice.com)
At 5 months of making payments on time and keeping my balance low The more than doubled my credit limit without a further deposit. (creditsesame.com)
At certain times during the year there are «Bonus Days» which will reward double the credits on everything in the store. (goodereader.com)