Gwynn is a Z-A Royale participant and a member of the Fist of Justice, hiding out in the sewers beneath Lumiose City through the events of Legends: Z-A, and her regular printing puts that setting right in the frame
Once the outwardly ridiculous price point is established, adherence to it takes on its own value, whether thats the markets price on an official token or a self-imposed value (as in the Hamtaro example)
Parallel Lives, Opposition Agent, and Reanimate are some of the chase cards in SPMs section of the Marvel Universe bonus sheet, and Collector Boosters have a guaranteed slot compared to a Play Boosters 1-in-24 odds
I started collecting Pikachu cards exactly a year ago (October 2015), and when I saw the Bulbapedia list I was already suprised to see so many cool cards I had never seen before
By sourcing pricing information from platforms like eBay and Rakuten, it equips collectors with the insights needed to make informed buying or selling decisions
The reprint is really nice to see, as this green commander would have kept rising otherwise