Not a hit with advertisers, these online worlds earn most of their money from the sale of virtual goods, such as items to spruce up an avatar or a private room.
这些网上世界不需要广告宣传，主要靠销售虚拟物品来盈利，比如用于装扮虚拟人或个人房间的物品。
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For example, Kayak claims that a room at the property booked elsewhere goes for $420 per night and that consumers would save around 23% off regular rates if booked through Kayak Private Sale instead.