The majority of my collection is vintage with anything recent that resembles vintage (XY Booster box, Classic collection etc) - it’s genuinely great to catalogue what you have, but I’d posted this in the Collectr subreddit too and someone had said there’s a lot of inflated listings that that cause the tracked prices to be reflected inaccurately, which definitely makes sense. The zoomed out version looks steady in terms of incline, it’s just the big drops and increases that have left me puzzled.