Now incorporate the fees that a majority of charge for plastic card processing and your $24.
Apart from the popular approach to brand promotion to share food [coupons->http://www.julongmy.com/comment/html/index.php?page=1&id=13263] in magazines and newspapers, the promoters are using websites, through e-mails and also SMSs.
They could be publicized via radio and tv commercials, but these
methods might be slightly expensive.