If you have to earn $50-$100 commission you have to sell product of cost $500-$1000 (If you’ll get 10% commission). If anyone who is reading have the potential to sell product of this much amount then why not he/she should start selling his/her own product. And money ultimately comes when a service or product is sold! So if you can write an Ebook then write another which you can sell for money!
Start by experiencing the product for yourself. You’re now going to be representing it, so you need to know what benefits it has to your audience. Offer the product to your readers in the way you think they would be using it. Photos and videos of you using the product in ways readers relate to will help build trust with you. Always keep your users’ experience in mind, and they will feel like it’s a recommendation just for them and be more willing to buy.
High ranking metrics will result in getting your site on the top position of several charts such as Top Alexa sites, Top WOT sites and so more. People usually go through these lists to discover new sites and hence you will be getting referral traffic as well. Who knows? Some of those traffic may be your next big client or loyal reader of your blog.