Keep your company’s business goal should also be top of mind. If your goal is attracting new customers, then maybe affiliates driving that type of traffic might be offered a better rate. And you may want to look at having different commission rates for different types of affiliate s- such as coupon affiliates, PPC affiliates, and super affiliates. Each of these groups has different strengths and will need to be addressed separately. You can also offer split commissions, whereby the commission is divided among multiple affiliates that participated in the process.
The way SAN operates is pretty similar to other high-ticket membership products like Digital Altitude (that one was shut down by the FTC for fraud), AWOL Academy, Mobe, etc. Overpriced and designed to make as much money as they can from their members. They keep pushing their members to upgrade their memberships and buy the next level/product. At the same time, they tell you that this is the way to earn money online. Making money online has nothing to do with buying levels. It has to do with working hard and offering solutions to your audience problems.
Choose a product that is relevant to your audience. Think about the traffic that will be visiting your blog. If you are writing a blog about sewing, it might not make sense to have affiliate links to weight lifting equipment. Chances are your readers wouldn’t be interested in that product. This means they would be less likely to click on the affiliate link, let alone purchase something through it.