There is the drawback that the artifact you cast from the graveyard enters with a Finality counter, but there are multiple ways around this
Best Buy's "Ask for Invitation" System For high-demand Pokemon releases, Best Buy runs an Ask for Invitation system
Each time a card leaves your graveyard, you get a zombie, so Gravecrawler with a sacrifice outlet, Life from the Loam, Kheru Goldkeeper making Treasures as you go
Card variants were also introduced, with one of the most powerful arriving on the scene during the Sun & Moon expansion
If you've ever been to a local game shop or a card show in search of Pokemon TCG cards, then you know how difficult it can be to find prices for certain rare cards
I dont send too many things in for grading but when I do, I like to be surprised as well