I'm a teeny-tiny little freelancer, my salary is only 3USD per hour, that's far cheaper than any other freelancer. I can accept a work based on commission instead of fixed price, so you don't need to worry about wasting your money on me.
I'm currectly located in Guangzhou city, I have connections with more than 200 manufacturers in China, whatever product you wanna source, I will show you the factory in no time. I worked for some US clients, sourcing products for their Shopify stores. There are a lot of things need to deal with: quality check, supplier sent wrong color or wrong size, return and refund, same products from two suppliers with color deviation or size deviation, etc. After receiving the packages from the supplier, I need to check the size, color, quantity in the first place, if lack one or two, I would contact the suppliers and tell them about this issue, so the suppliers know I'm checking the packages, they won't playing tricks. After the quality check, the good ones will be sent to the warehouse, the warehouse will put the items to the relevant orders and send them out, meanwhile deduct corresponding quantity from the stock and fulfill the SKUs on Shopify.
In addition to product sourcing, I'm also a programmer, I made a ERP system for one of my US clients to fulfill the Shopify orders without any trouble. If you wanna build a website, I can build one for you.