I found a bug with available AmazonRDS instance types having no value. I'm not sure if the bug is in the API or if it's in the CLI, so I put it here: https://github.com/infracost/infracost/issues/2297

I replied on github so we can keep the thread in one place

☝️ tl;dr update for anybody else, not all

db.*

instance types are available for AWS Aurora, which makes it a bit opaque when we try to reference an instance type that isn't available.