Submitting your cards to a professional grading service means theyll be evaluated, authenticated, and sealed in a protective case (often called a slab)
Here's a card which adds to the pile early so we make more 1/1s, then gets bigger as we make those 1/1s and turns into a giant-token creator later
While there are more of them, making them slightly less rare in theory, that also means there are more of them to be traded between collectors, and one of the Golden Traveling Chocobo cards thats already been discovered was recently put up on eBay for $50,000 It was Traveling Chocobo 41/77 to be precise, and it was technically listed for $200,000 initially, before its seller apparently thought better it Wargamer reports
Depending on the availability of certain staples, your go at trying a more budget deck can also run into issues when you feel compelled to fill in the slots
thats an integral part of deck construction and a key driving force behind people opening packs and buying singles