TL;DR: The Magic: The Gathering Avatar The Last Airbender Jumpstart Booster Box is on sale for $85.67 at Amazon , down from its typical $104.35 price. Opens in a new window Credit: Magic: The Gathering Magic: The Gathering Avatar The Last Airbender Jumpstart Booster Box $85.67 at Amazon $104.35 Save $18.68 Get Deal Magic: The Gathering’s Avatar expansion still stands as one of the most popular in the game, and Amazon’s giving you more opportunity to give it a try without smashing through your trading card budget.  As of April 2, Amazon has the Magic: The Gathering Avatar The Last Airbender Jumpstart Booster Box on sale for $85.67 , which is down 18% from its typical $104.35 price. That puts it only $1.62 above its market price on TCGplayer . What’s more, this is Amazon’s lowest price in 30 days and is only $2.47 shy of the lowest-ever price — as confirmed with price tracker camelcamelcamel .  Mashable Deals Be the first to know!…