Honestly, I don't get the pricing. (this applies to Heroku too, but they use Amazon). A bare metal server like this[1] priced at 130 EU/month should easily host (let's be generous and not oversell the CPUs) at least 100 containers at 20 EU/month = 2000 EU/month. Even with all the convenience of a PaaS, this doesn't seem like a good deal.
[1] http://www.hetzner.de/en/hosting/produkte_rootserver/px120