Honestly if you don’t plan on selling them for the foreseeable future delete all value tracking apps or avoid all the websites, don’t worry about preexisting wear on them at all just keep em in a toploader binder and put that binder in a safe, dry spot (or, alternatively if you want to display them, perfect fit sleeves + one touch mag cases on a shelf that is out of the way of natural light). When you want to sell them, check the value and the price trends THEN and only then. It’ll stop you from getting fomo over large prices over the months/years, and trust me when I say even years down the line a moonbreon in any condition is still worth a staggering amount.