A more apt comparison would be to MongoHQ I suspect. It still reinforces your argument, as a 5Gb MongoHQ hosted database is also on Amazon for $149 a month. I

A more apt comparison would be to MongoHQ I suspect. It still reinforces your argument, as a 5Gb MongoHQ hosted database is also on Amazon for $149 a month. I love DotCloud to pieces, but use them selectively. The real key to this question is how much you value the convenience and super scalability of it. For me, I would much prefer having my code on Dotcloud if only because it integrates with Github, can be pegged to a particular branch, and is super super scriptable (so that you can have a repository invoke a webhook that deploys your code to Dotcloud, for example.)