If instant gratification is your thing, affiliate marketing will make you want to run into a wall. Even after you surpass the threshold needed to “cash out”, there’s usually a waiting period before your commission is confirmed/approved, simply because they allow time for people to return goods if needed. So yes, affiliate marketing is by no means a fast track to cash.
You should also make sure you aren't competing with your own affiliates for eyeballs. Any marketing channels you're using, such as search engines, content sites or e-mail lists, should be off limits to your affiliates. Put marketing restrictions into your affiliate agreement and notify partners immediately. It's your program--you set the rules. Or, if you prefer, you can let your affiliates run the majority of your internet marketing.