My question is how much upload bandwidth this needs. The article linked here mentions it in passing, but that's always been the pain point for things like this for me.
From what I can tell, Llama uploaded 1.8 GB. An Internet connection that can upload 10 megabits per second, sustained, should be able to complete that in a half hour. If that's too long, it might make sense to run Llama from a small EC2 VM, eliminating any concerns about bandwidth.
IMHO Llama looks so good that it makes me wonder if AWS is undercharging to attract developers.