This week  YouTube launched Merch Store, a new feature for YouTube partner channels that offers direct to fan sales of merchandise, downloads, concert tickets and more. Google confirm to us that more partners will be added later, but for now it's just four: Songkick for concerts, iTunes and Amazon for downloads and Topspin for merchandise plus direct to fan ticketing and downloads. To show off the new integration they've created a HOW-TO: Set up your YouTube Merch Store video: