Good TIll Cancelled (GTC) listing type is relisted by eBay automatically every 30 days. The system does not control the relisting function.
If you're selling multiple identical items in a single fixed price listing with Good 'Til Cancelled as the listing duration, you can select the out-of-stock option under ebay > setup > store manager > ebay account
When you enable the out-of-stock option:
All of your existing and future Good 'Til Cancelled listings use the out-of-stock option until you disable the option.
When the quantity of the listing becomes 0, your listing stays active, but is hidden from search results. The quantity in the listing can become 0 either through buyer purchases or you can revise the listing and set the quantity to 0.
When you increase the quantity of items available, the listing can appear in search results again.
If you change the duration of your listing to anything other than Good 'Til Cancelled, the listing is no longer out-of-stock enabled and ends when the quantity becomes 0.
You can still end your Good 'Til Cancelled listing yourself at any time.
Using the out-of-stock option on your Good 'Til Cancelled listings may help protect you from receiving a transaction defect for running out of stock.
GTC listings will keep renewing on eBay until they are won or have been manually cancelled.
To cancel a listing, go to: