We all know it's really hard to get good pricing and cost information.
Please share what you can so you can help your peers.
The solution is free and open-source. That said, if you have hardware failures, then there's the cost of replacing it. That's the only cost. In my case, when I was finding the discs were failing too fast, I determined that the drives were really running too hot and I bought a new really big case with lots of fans. Now the discs are really cool. Everything's really cool in it. Once I invested in the fans, that's when it became ultra-reliable.
Its price is okay. It suits our needs.
For our configuration, we pay a little bit less than €10,000 ($12,000 USD) per year. The only other costs are for the hardware in the data center.
We use the free version of the program.
Since it is free (except for the hardware cost), and robust, I would advise others to use it. If the user is not technologically proficient, I might suggest TRUE NAS for a guaranteed turnkey solution