Once the racks have been ravaged and Record Store Day ends, the tireless pursuit for rare and elusive vinyl treasures spills onto the Internet. This year was no different: An unannounced 12-inch containing the very first clues to Boards of Canada’s first album in eight years, Tomorrow’s Harvest, fetched its enterprising original owner $5,700 after 75 bids on eBay. The release, which contained roughly 20 seconds of ambient synths and a robotic sequence of numbers, was by far the top-earning RSD-related flip of 2013, but several other exclusives have sold for hundreds of dollars. (Shockingly, Dave Matthews Band can still close a deal!) Click through SPIN’s collection of this year’s biggest secondhand sellers.