Pier
kiffaudio.com
Yes, a comparable PC will probably be cheaper but it's not as much as you're claiming and, again, the choice of platform is a very nuanced discussion.Correct me if I am daydreaming here.
Windows vs macOS is an endless discussion but both platform have pros and cons. Personally I think for audio macOS has an edge with CoreAudio and CoreMidi integrated right into the OS.
Comparing the cost of a couple of components is not really the best way to determine if actually a PC is cheaper or not. It's like comparing the price of cars while only looking at HPs. What about engine efficiency? What about comfort? What about the transmission and steering? Etc.
With a PC you would not be even close in terms of electricity compsuption, regardless of how much you pay for it. In Europe let's say an average of 0.28 Euros per KWh. Assuming your PC consumes 300W per hour and you work 160 hours per month... that results in 48kWh per month so about 780 Euros over 5 years. That's not negligible and it's not that far off from the 1,100 Euros you paid in components.
Plus if you live in a hot area you'd need to add AC costs since a PC generating heat during the summer is hell. I'm from Mallorca so I know all about this

And to be a fair comparison you'd also need to compare the quality of the individual components. Did you get a cheap motherboard with cheap capacitors? Are you getting 7000MBps SSDs? Is your power supply Gold or Platinum certified? How much did you spend in fans and cooling? Etc.
As I've discussed earlier, time is also a resource to consider. How much time did you speend picking up the components and building that PC? How much will you spend on the maintenance of that PC like random stuff with drivers, replacing hardware parts, etc? Say you spend 20 hours over 5 years (I'm being extremely conservative here). If you charge 100 Euros per hour for your work now you've lost 2,000 Euros.
Etc.
IMO it's very difficult to get to an actual percentage of how much cheaper a PC is or not.
My hunch is that yes a PC is probably like 20-30% cheaper than a comparable Mac with the big advantage of being modular but it comes with other cons such as noise, higher electricity costs, third party drivers shenanigans, etc.
