Unfortunately, there isn't a way to link your eBay listing directly to your Shopify store. However, there are a few workaround options that you can use to list your Shopify products on eBay.
One option is to use a third-party app like ExportFeed to create an eBay feed for your Shopify products. This app automatically syncs your Shopify products with your eBay listings, so every time you add or update a product in Shopify, the changes will be reflected in your eBay listing.
Another option is to manually create your eBay listing and include a link to your Shopify store in the listing description. This way, interested buyers can click the link to visit your store and purchase the product directly from you.
Of course, you'll need to make sure that your Shopify store is set up to accept payments and shipping before you can start selling on eBay. For more information on setting up your Shopify store, check out this help document.
