It depends on a number of factors. A good balance should be struck between the products or brand, the commission rate, and the cookie duration. On the affiliate’s part, you should consider your target market, follower count, and conversion rate.
For most people, doing affiliate marketing provides them with extra cash, but it may not be their main source of income. Because sales may be unpredictable, it’s hard to determine how much you can earn per month. This is why you should do some research on commissions, cookie duration, and conversion rates of affiliate programs you are interested in joining.