Finances. You need to be good at quick math and be able to make quick decisions. You have to be careful how much you pay for a book, and then keep careful track of the expenses involved in selling it. For instance, when you sell on a website, they’ll take a commission from the sale. In addition, some sites, like eBay, will charge you a listing fee for each book. If you request that your money be deposited via PayPal, then you’ll be charged a transaction fee per book. If you’re not careful, the fees will quickly negate your profits.
Affiliate marketing allows its marketers, or “affiliates,” to take their income into their own hands. This strategy is, in some instances, referred to as a form of “passive income” for those who endorse products. By this, we mean affiliates aren’t always actively selling to make money. They put their strategies in motion and any sales that come through their site drive income.