1) Gross Profit Margin – This is the first place I start. Clearly you can't offer 50% commissions on items that you only have a 20% profit margin or you'd be out of business fast (and probably in debt). So start by determining your minimum, median, and average gross profit margins on items in your store. You may also want to determine these numbers separately for each category or product type since it's possible to offer different commission rates for each product category, depending on how complex you'd like to make your program. In my experience, the simpler the better when it comes to commission structure, but technically anything's possible.
The concept of affiliate marketing on the Internet was conceived of, put into practice and patented by William J. Tobin, the founder of PC Flowers & Gifts. Launched on the Prodigy Network in 1989, PC Flowers & Gifts remained on the service until 1996. By 1993, PC Flowers & Gifts generated sales in excess of $6 million per year on the Prodigy service. In 1998, PC Flowers and Gifts developed the business model of paying a commission on sales to the Prodigy Network.[8][9]