The cheapest seems to be more than $40, but based on the description its only allocated $5 to $10 worth of computing. I am using Linode or Digital Ocean pricing for that, but even with Amazon's inflated EC2 pricing it's probably like $25 max.
So I can't justify paying $40 per month when I can get the same horsepower for $10 or $20. I can set up an open source system for monitoring and containers restart automatically.
For people that have $200,000 burning a hole in their pocket, it may be a different story.