15% Markup $4.80
Pharmacy Labor $3.00
Shipping $5
Above from Cuban's site. You'd only be saving them ~10% as other items are real. You'd also have to process payments and would incur some bad debt. Further reducing to ~5%. I think Cuban's solution is pretty good, all things considered, and you'd have a hard time getting established. If you really want to go after it, find some True Pill employees on LinkedIn.