It can come off as lazy, but over time I've realized sometimes it's not so easy for some to look stuff up. Some people may find Rarity Guide, which was a thing some time ago. If someone is looking to sell and price their games according to that site, they are going to price too low. Also, there's a lot of information out there that is just simply wrong or can be misleading, so it doesn't hurt to ask a community that may know the answer.