There are several reasons for this, including the fact that they were the first to be released and therefore more difficult to find and collect, as well as the fact that they were more popular in their day than many of today's most valuable Pokemon cards (which have only come into existence within the past several years)
If you haven't fired either of those up in a while, now is a great time: a lot of improvements have been made and are forthcoming (did you hear about MTG Arena 's 8-player drafts?!) that make playing online better than ever
4 Sphere Grid Green Stompy Decks Are Feasting Green and +1/+1 counters go together like blue and being annoying, and Sphere Grid really leans in to the stompiness that makes the colour so much fun
While these General Mills Promos can't hold a candle to some of the most valuable Sun & Moon era promos, they're gaining value and attention over time, as we get further away from their original release dates
Three cards for 1 mana
Chart shows the price of Metal Energy #258 at the end of each month going back as long as we have tracked the item.
