ResellKit is a simple to use cross-listing app designed to increase your productivity, Start using ResellKit for FREE, No credit card required.
Cross-posting items have a cost. The time you spend to manage and track items on multiple platforms. Autopilot will look for new orders and removes sold items from other platforms. It will do it every 10 minutes or so.
With this feature your chances to double-sell will significantly decrease, Note. Autopilot does only work when ResellKit is running and your device is connected to internet.
First list your inventory with your favorite platform. Once your listings are in that platform you can cross-list them to other two platforms in bulk. In the process you can review what will get published.