In addition to eBay's original auction-style sales, the website has evolved and expanded to include: instant "Buy It Now" shopping; shopping by Universal Product Code, ISBN, or other kind of SKU number (via Half.com, which was shut down in 2017); online classified advertisements (via Kijiji, or eBay Classifieds); online event ticket trading (via StubHub); and other services. eBay previously offered online money transfers as part of its services (via PayPal,[4] which was a wholly owned subsidiary of eBay from 2002 to 2015).[5]