Stockfeed reads your suppliers' stock files and sets your stock to match. Give it a link to a CSV or text file, a Google Sheet shared by link or a Dropbox file: it finds the SKU and stock columns itself, whatever the file calls them and however it is punctuated. Preview what would change, then let it run on a schedule. Keep a few units back, set a supplier's products missing from the file to 0, and apply your markup and rounding to the supplier's wholesale figures.
Automate inventory updates from FTP, SFTP, and web feeds.
Sync products and inventory levels between multiple stores...
Walmart products, inventory, and order sync with 24/7 support...