Trade Runner is set up to do a complete sync between your WooCommerce store, the Trade Runner and Trade Me once every 24 hours, usually at midnight. 

A full sync includes updating all product information including images, descriptions, price, inventory, titles etc. between WooCommerce, Trade Runner and Trade Me.

The time it takes for a full sync depends on the number of products in your WooCommerce store. You can increase the number of syncs throughout the day to update inventory however when your store is syncing you won't be able to perform all functions in Trade Runner for example map products to Trade Me categories.