Yesterday Apple unveiled the newest additions to their lineup – the iPad Air 2 and the iPad Mini 3 – starting at $499 and $399 respectively. As usual when Apple announces a new product, many people are left wondering whether to trade in their old versions for the thinner, sleeker upgrade. In order to help you make the decision, we have tracked selling prices of iPads from Apple (new) and eBay (used) since 2011 and compiled them into a few easy-to-understand charts. This will help you to see what happens to the value of an old iPad after a new version is launched. In other words: Check out how much your iPad is worth, estimate how much it’s going to be worth a year from now, and decide whether to make the upgrade now or later. Enjoy!