You’re a gray-market auto dealer in China. You have a few Tesla Model Xs for right-now delivery. You don’t know how much to charge. What will the market bear? Online pricing guides are no help. So you turn to TeslaMondo, which forecast in 2014 that the scalped value of a Model X sold between 2015 and 2017 would hit $250,000. You go with that figure, but then you back off $10k to show you’re a nice guy. Sold! All thanks to TeslaMondo.