The chase card (Mew ex SIR) is beautiful and goes for around $319
She can combo in other ways, too: Adarkar Valkyrie + Altar of Dementia or Goblin Bombardment, or with Brago in Jeskai builds
While the artwork is great, the edges of the sleeves seem to curl a bit making them very difficult to shuffle
Source So Thick Grey stamps are most likely created when printing sheets were placed on top of each other, before the 1st edition symbols had enough time to dry
(They can also choose to sell them via Ebay or other methods, likely earning more, but those will take longer for them to receive the funds.) Hit-to-miss ratio GameStop hasn't said a lot about the card packs publicly, but on May 9, it paid a YouTube streamer (5) to open packs in a broadcast to promote the collection
This is the most common use case, but its also a nice reactionary play in response to a choice removal spell