My take on the article is that its saying; you can buy a Toyota Supra and modify it but for about the same amount of money you could just get a Ferrari instead.
its more like: If you buy a toyota supra and drop a ferrari engine and other ferrari performance parts into it, you will end up with the same price but a toyota supra instead of a ferrari.
You can certainly spec a PC with the same amount of processing power for much less than $3000
You can certainly spec a PC with the same amount of processing power for much less than $3000