Before the set launches on June 26, you can preorder the Magic: The Gathering Marvel Super Heroes Jumpstart Booster box for $114.93, 31% off the sticker price of $167.76. It's sold and shipped by a third party, but there are a few trustworthy vendors for trading card games on Amazon and Collectors Expedition is one of them. New Price Drop on Marvel Super Heroes Jumpstart Booster BoxEach Marvel Super Heroes Jumpstart booster box comes with 24 Jumpstart booster packs. Compared…