Please help our moderating team work more efficiently by not sending us support questions via PM. You can read more about how AppThemes support works here. However, you can send a PM to follow up and remind me if I missed your support request/thread.
There is no built in payment gateway in Clipper, so no, there is no way to currently charge people to list coupons or to "sell" coupons. Monetization of the theme comes from affiliate sales.