I’d stick with Amazon if I were you. All of my Amazon sites only have Amazon affiliate links. If you use Google Adsense display ads on your site, you’re literally taking people away from your site for the sake of just a few cents with these type of ads. If you direct them just to Amazon, then you have a greater chance of earning more money from that click.
Setting commission levels in Affiliate Royale is a breeze. Once you purchase a plan and install the plugin, locate the Affiliate Royale menu on the left-hand side of your WordPress dashboard. Next, navigate to Options > Commission Settings and enter your commission rates. You can add more commission levels by clicking add level. Of course, remember to click Update Options when you’re finished in order to save your changes.