Cheaper first quest
I figured out how to get one of the Brain Tree Quest answers from the Esophagor for next to peanuts! Instead of going to the Brain Tree first and getting your quest, go to the Esophagor, and offer to feed him. He will always ask you for a really cheap item (e.g. Slime Sundae). Before you buy and give the item to the Esophagor, go and get your quest from the Brain Tree. Then, when you give Esophagor the item, he’ll tell you the first answer to the quest! Unfortunately, this only works for the first answer; the second answer’s items will be harder to come by usually. – by Caitlin