The credit reparit business is a very high risk business often time it is difficult to get a merchant account to process payments for that type of business. not to say that you cannot find a company that will do it. But the rates are always a bit higher.
For the coupons sits, most websites that offer coupons monetize on ads and such for putting together a database of coupons for people to download.
But if you do it offline, you can perhaps print a brochure and pass it around your communuty for free, the participating companies in the brochure, you just have to ask them to pay to get in there
For the couponing I was thinking of maybe renting a room in the local community center, and facilitating a class. The class would include basic couponing information and also some supplies to get each person started. I was also considering maybe throwing coupon parties for those that would like to learn about coupon in their home with maybe a few friends