$310-$330 retail price for Commander Master set boxes. Without tax and shipping, so 350$ for one whole box of cardboard. "We understand supply and demand" they said. : r/freemagic
The (un)profitability of Commander Masters (for everyone who isn't Wizards of the Coast) : r/mtg
Amazon.com: Magic The Gathering Commander Masters Set Booster Box - 24 Packs (360 Magic Cards) : Toys & Games
Amazon.com: Magic The Gathering Commander Masters Set Booster Box - 24 paquetes (360 cartas mágicas) : Juguetes y Juegos