I use this system.
http://www.dispensequick.com/accessories.html

I pay an average of 3-4 dollars for prepackaged antibiotics and/or maintenance meds, and sell the for 10 across the board. (Zpacks cost 11, and I sell them for 20) Most people prefer to buy from me to save the time and effort waiting at Wal-Mart.

I could bulk buy and repackage myself, but in my opinion.. this is tedious, would increase labor cost, and make inventory tracking a headache.

I do offer my employees some fun incentives to make the program flow better, as it does require some extra effort. This makes it a Win-Win for everyone.

While I am not going to get rich off of dispensing, patients truly do appreciate this value added service.