You are not obligated to stay loyal to any one brand in your affiliate marketing efforts. In fact, a great way of ensuring that you get better commissions is by covering all the bases regarding a particular product. For instance, if you have successfully promoted product A from company X, look at company Y's take on product A. If you can provide your audience with more variety and options, then you stand a better chance at making all of them profitable leads for both yourself and the merchant. In other words, look at the affiliate programs that your merchant's competitors are offering and then sign up for those.
The return rate is defined as the number of orders returned after purchase as a proportion of the total number of sales. For example, if six products are returned for every ten sold, then a merchant is said to have a return rate of 60 percent. High return rates are an indication that a product is not meeting the needs of the customer in that it is defective or lacking in quality. A high return rate might be detrimental to your bottom line, because it means you will get debited for the returns and thus lose your commission. At the same time, if customers have to keep returning products because you oversold their capability, you might be in trouble as far as your reputation as an affiliate marketer. Therefore, it is important to accurately describe what a product can do without making it sound as if it is the solution to all of the world's problems.