Unicorn, loving the post! Who said math was useless? I have an attack build, volary Hansel, and a guild Hansel. I don't take time to skim, and all 3 accounts make about 1.7b per hour. Like unicorn stated, guilds are extremely cheaper.
I've wasted over 800 billion on lowlands alone, redoing it on my main. I think I finally finished it now.