Buy the Card Beginning March 1, Rockville Rewards Cards are $10! Card valid beginning September 1, 2013 through August 31, 2014. You can purchase your card at one of the participating non-profits or businesses listed below. As an added convenience, we are also selling cards online to the public. Please allow 5 business days for receipt of your card. Help yourself, help others and help the community with Rockville Rewards.