The frequency on inventory syncs depends on your ecommerce store.
- Shopify and BigCommerce inventory updates are in 'real time' - if you change the inventory in Shopify/BigCommerce, Trade Runner receives notification of the change and then updates Trade Me.
- Magento inventory is updated every 20 minutes.
- WooCommerce inventory is updated every 24 hours (overnight with the full product sync).
More details are available in the Syncing FAQs