After the initial release of Pokmon Card 151 [SV2a], the Pokmon TCG experienced an uptick in general popularity for this same reason
Chart shows the price of Togetic #14 at the end of each month going back as long as we have tracked the item.
With MTG Unfinity, Wizards of the Coast made the controversial decision to do away with silver border - making many Unfinity cards legal in Commander and other eternal formats
It doesnt stop there though, since additional landfall triggers just put more +1/+1 counters on your creatures
In some rare cases you might get a cheaper deal from a local seller in your country, especially for extremely playable cards, but for most cards checking a Japanese auction proxy site, will give you cheaper options
Once you've settled on your favorite cards and the colors you want to play, it's time to assemble your deck