When comparing Cloud at Cost vs Luna Node, the Slant community recommends Luna Node for most people. In the question“What are the best VPS providers?” Luna Node is ranked 12th while Cloud at Cost is ranked 19th. The most important reason people chose Luna Node is:
Plans start at $3.6 per month and include plans where you only pay for the CPU and bandwidth that you use. A 2GB RAM 40GB disk 2 core VPS that is idle most of the time can cost ~$6 per month.
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Pros

Pro Cheap. Like, really cheap...
With the coupons they offer all the time you really can't beat the price when you consider its a one time fee.

Pro Good variety of OS selections
You can load several variants of Linux (Ubuntu, Cent OS, Debian, etc.) and they even let you throw Windows 7 on them (security nightmare, but whatever). You have to enter your own Win 7 key.
Pro Extremely low cost
Plans start at $3.6 per month and include plans where you only pay for the CPU and bandwidth that you use. A 2GB RAM 40GB disk 2 core VPS that is idle most of the time can cost ~$6 per month.
Pro Best Value
Their 1 GB VPS plan (m.1s) is $3.5/mo, haven't noticed any downtime after two years and it is very good price for that much RAM.
Pro Bitcoin payment support
Pay for credit through many payment methods including Bitcoin and Paypal.
Pro Tons of features
They have tons of features like snapshots, block storage, and free e-mail hosting.
Pro Use any OS
Uses KVM so you can use any OS, even more obscure ones like NixOS. Upload your own ISOs ore QEMU images.
Pro VNC access to terminal
Makes it easier to fix boot image issues on unsupported ISOs.
Cons

Con Service
You get what you pay for. Don't expect stellar customer support or blazing fast boxes. I only use these for really basic things. I have one running GitLab to back up my code, a couple running Cloud 9 so I can dev straight on the server, and one as a proxy for when I'm on public wifi or something. Don't think you are going to run your company's web site on these servers.
Con Bitcoin can only be used as a payment after a credit card has been added to the users account
Bitcoin can only be used once the user has added their credit card info into their Luna node account. This pretty much negates the point of using bitcoin, if you need to hand over your personal information anyways.
Con Occasional downtime
Has planned and unplanned downtime of the network occasionally. More frequent than larger VPS providers, on the order of 5 minutes a month. Not an issue for personal and small business use. They are actively improving this though.
