what sells online refers to the types of products or services that are commonly bought and sold on the internet. Popular items include electronics, fashion, beauty products, books, toys, and home goods. Online marketplaces such as Amazon, eBay, and Etsy have millions of active buyers searching for products. Sellers can take advantage of these platforms to list products and reach a global audience. Digital products like ebooks, software, and online courses are also highly profitable in the online marketplace.