4. Amazon Products
I also added some more colic products for my review sites, some of the products I got from Amazon.com. Since it is a physical product they had a lot of different options to choose from there.
The great thing when you add products from Amazon.com is that you get commission from any other products your visitor buys when you send through purchase. Starting out you will get 4% commission but the more products you sell the higher commission you will get.
In my case the products were not very expensive but if you target more expensive products you can make good money with amazon.com. For example a $1200 TV or camera will give you a $48 with 4% commission. The advantage is as I said before if they purchase anything at all, not even related to your product you still get paid.