So, Vera Brosgol's Anya's Ghost was a really good book.
Almost as good as Pepper Penwell, so buy them both so you can get that "free shipping" deal on Amazon!
EDIT: I just noticed that Anya's Ghost is currently only $10.87 (32% off) and Pepper Penwell is currently only $11.66 (22% off), so to get the free shipping, you have to add a third item. I recommend Kurosagi Corpse Delivery Service Vol. 1, which is currently only $8.81 (20% off).