ProStores allows businesses to customize their storefronts with their own brand, categories and a unique Internet address. The service will include shopping carts and the ability to integrate sales with major shippers.
The service costs $6.95 a month and carries additional fees of 0.5 percent to 1.5 percent per transaction. The stores will be able to accept payments from PayPal, an eBay division.
"Listening to the eBay community, we believe there's a clear role we can play in helping them scale their businesses," Bill Cobb, eBay North America president, said in a statement. "ProStores can be customized to meet sellers' specific needs."
eBay's latest offering comes as Web giantsare emerging as competitors and seeking to bolster the number of merchants and buyers on their own sites.
eBay's PayPal recently, which allows customers to process credit card payments on a seller's site without redirecting them to PayPal.