[jrockway]

I really don't think this is a UX problem. It was pretty clear that there were two options, production-ready and free. If you want to be picky, I suppose you can be upset that RDS is just a couple of VMs that you can't run other things on, or to question how much performance benefit a certain number of provisioned IOPS gives you. I don't think that's a dark pattern so much as "we don't know what your workload looks like, you don't know what your workload looks like, so just provision a bunch of IOPS and hopefully we never speak again."

I am less surprised that the mental model fell apart. I guess a lot of people think cloud resources are something that is efficiently shared (consider S3, you pay per byte you store, store 0 bytes, pay $0). But that's actually a rare case, most of the time you are provisioning something for your exclusive use; if you have a database server it costs you the same whether it's doing 10000 transactions per second or sitting completely idle and never logged into.

(Incidentally, the true sharing model used to be popular. Shared hosting with no isolation between tenants predated AWS by a decade. You got a chunk of a computer and shared Apache, MySQL, and PHP with hundreds of other randoms. Very cheap!)