It seems like you want to do the same thing.
I will recommend a tool named ShopMaster(shopmaster.com) to you! Now you can get started with the FREE Starter Plan. There is no time limit.
It makes your work efficiently.
You can list the products directly at eBay, Shopify & Wish stores after you import the products from Aliexpress, 1688, eBay, Amazon, Walmart, Banggood, Chinavasion & Alibaba.
Don here from Shopify!
I just confirmed with some of our escalated teams here that there should be no problem posting products imported to your admin from a drop shipping service to third-party channels like eBay or Amazon.
As long as the products are in your Shopify admin you should be able to post them to the external channels with no issue.
Feel free to contact us any time via our support site if you need any more help or info. :)
All the best!
Hello,Why not dropship from big dropshipping supplier ? ChinaBrands has Amazon select product for their distributors for selling on Amazon . Most good thing is that some of these
Amazon products is located in USA,UK OR Spain warehouse,So that It can ship from these countries directly ! :) You can Registerhttps://www.chinabrands.com/site/signup.html?code=ztJb4m0awRin for free and be their formal member ,So that you will have the right to enjoy all functions on their website :)