Did you 'borrow' those Flash games? $3 sounds like you did not make them yourself, or you are a really cheap provider of games
65 visitors a day x 30 = 1950 bannerviews
Not that interesting to make a banner + button for your contest.
$50 worth shopping in your store would buy almost anything in there though. I saw $3 games and $0.01 content CD's.
Good luck on the contest, I already saw some winners here, labret's one is right up there!