The first post needs to be updated, the cost of Otyugh has been increased 8)
I was going to ask where it got it's name from, Oty = Oh thank you, and 'ugh' is a kid of, unimpressed sigh.
So the name strikes me as ironic, as it is one of the most pain in the ass creatures in the game.
Please let me know if my 'name theory' is right/wrong