That's pretty much bang on market price right now, and with six boosters included, you're looking at around $6.65 per pack, with 10 cards in each, and 60 in total (working out at about $0.11 per card)
All these prices are from TCGplayer.coms Market Value and are subject to change at any time
You can only use them if you are doing a Limited event using Mystery Boosters, or are participating in one of the MagicCon Unknown Events that has its own unique playtest cards
Thanks for reading 1 Like pieterpie June 26, 2019, 12:14am 2 I think there is interest for cards that are flawless, but BGS seems to have their issues (probably moreso than PSA), and consistency is very important, particularly with something such as a black label
2019 Pokemon Sun & Moon Unbroken Bonds Secret Reshiram & Charizard #217 BGS Black Label 10 Recently Sold for $4,050 [Source] Heres another great example of the premium achieving a Beckett Black Label can add to a card