Quote
ecoreprap
AliExpress is not so friendly,one reason is that they charge 5% for the seller the other is that the logistic is very slow.
Amazon is 8-15% depending on the category. Ebay is 10% on up depending on what options are selected for the item. If the 5% includes merchant fees for credit card processing, which can 3-5% for a small seller, 5% is a steal.