Drop-shippers are buying from China and selling to the US or buying from USA Amazon and selling to Canadian buyers.
There are many ways to work as drop-shippers. The most popular way is buying from China and selling to the US. Most of the drop-shipping business owners need a US company and they do not know how to start.
Our recommendation is to start with a Delaware Company if you live abroad and register with Amazon USA to get your payment from customers with your US business.
Delawarefile.com provides company formation services as well as EIN service.