A new DatPotato shop has opened! It's in Ice Spikes, next to the nether portal. It currently sells baked potatoes for 1 diamond per 4 stacks.
Other payment methodes: 1 diamond = 2 iron ingots = 4 gold ingots
DatPotato, the best potatoes in the world*
*This was true because they were the only potatoes in the previous worlds.