Founded in 1997 Overstock.com initially sold exclusively surplus and returned merchandise over online e-commerce marketplace platform, providing liquidation to the inventories of nearly 15 failed and unsuccessful companies, by retailing their product below-wholesale prices; furthermore, it expanded and started to sell new merchandise also.
Overstock deals in bedding, home décor, furniture, and many other goods that are closeout as well as new merchandise.
For selling the products on Overstock, there are two methods :
1. You can upload your products on Overstock panel through CSV
2. or, You can upload the products through Overstock API integration.
Through CSV uploading, you will be able to sync price, inventory, orders, returns on overstock panel only not to your local e-commerce store. So it is not feasible method to upload products through CSV.