He's roughly wrong if you're pedantic, a pc with 4mb of ram in 1993 cost about $1125 (bottom of the premium market as only premium pc's had 4mb of ram) which has about the same value as $2600 usd today. Really though considering the development speed at the time (going back even a year and you'd pay a higher price for similar specs) and that someone buying a "premium pc" when doom was realeased could easily spend twice as much without being able to blow away dooms requirements I wouldn't argue the point they made.
Plenty of stories about doom on a vape pen. Here's one:
Plenty of stories about doom on a vape pen. Here's one:
https://www.thegamer.com/doom-running-vape-usb-connection-pc...
Other notables include doom on a pregnancy test, and doom on a sbc powered by a potato battery.
Some actual pc prices in 1993 if that's what your after, look at premium pcs for 4mb ones https://dosdays.co.uk/topics/1993.php