Our system has a setting called a Minimum Stock Buffer. You can use this to set a minimum level of inventory on all your products that you want listed on.
For example, if you set the Minimum Stock Buffer to 5, all products with inventory in our system of less than 5 will not be available for sale on eBay.
To set up your Minimum Stock Buffer go to: Settings then Administration in the navigation. Under the heading ‘Configuration’ there is a Minimum stock buffer field. Enter your desired buffer then click ‘Update’. Then go to the Dashboard and click ‘Update Marketplace’ to send any changes up to eBay.
Note: the default value is set to 1 so any products with inventory of 1 will not list on eBay. Enter ’0′ if you want all products including those with an inventory of 1 to be listed.