Pre made PC components + LinuxCNC

We are planning to sell premade PC's (components) with linuxcnc.
Tested hardware, with good latencies both to Mesa PCI/e cards and ethernet cards, with linuxcnc already installed.

They would include:
Motherboard, RAM, SDD and software

I was hopping to get some feedback so that I would know if this is appealing.
I would imagine a surcharge of about 30€ to manage the installation work on the PC and testing it.

If I have people interested I could buy a large amount of PC hardware and I think that the hardware discount that I would get would be larger than the 30€, meaning that the end customer would pay for the hardware only.

What do you think? Any comments are welcome (price targets also!).

If the moderator could move this for "User exchange" I would appreciate. My mistake.