I'm wondering if such a software exists which primarily is an online commerce store. Inventory is managed primarily through this store (quantity, price, new products, etc.) and can be changed manual via a web interface or managed via an excel sheet upload.
The site would then interface with web services such as Amazon, eBay, and eBay Motors such that everything listed on my primary independent web store is also pushed to Amazon, eBay, and eBay motors. As quantity and price is uploaded and updated on my primary site the updates also get pushed to my Amazon and eBay stores.
Does something like this exist or should I be at the patent office?