Early buyers who got in near release saw multiples on their money, which is part of why it now carries a "should have bought it sooner" reputation
Instead, the Pokmon Company International the parent company behind the franchise continues to innovate and bring new cards into the market
What is that thing on the top left, though
The closest I could find to anybody doing it in the mainstream recently was Artifact (I know, I know, I'm stretching the word "mainstream" here) with a slightly bastardised version of the concept handled via Steam's marketplace, and even then it's still an online auction house, not just doing fun swaps with your pals and saying "well I've got this, what've you got?", like exchanging the best parts of your packed lunches at school
Meren of Clan Nel Toth Meren of Clan Nel Toth is the most playable of the experience counter legendaries from Commander 2015