Yes, you can sell used comics on eBay, and it's a popular marketplace for collectibles and back issues of all price points. However, it's always best to have your own online store if you're serious about growing your business. With Shift4Shop, you can actually sell within your own eCommerce website and list your comics on eBay at the same time, which will attract customers from more places (and draw the attention of eBay users to your shop). Shift4Shop has a built-in integration and set of tools for selling on eBay, including the ability to export products from your store directly to your eBay listings, synchronize your inventory between eBay sales and website sales, and manage your orders from both platforms within your Shift4Shop dashboard. This saves a lot of time and effort while giving you the best of both worlds.