The Commodore 64 launched in 1982 for 595 bucks. Wikipedia says "During 1983, however, a trickle of software turned into a flood and sales began rapidly climbing, especially with price cuts from $595 to just $300 (equivalent to $1600 to $800 in 2021)."

I believe this was the PC of the ordinary person (In the "personal computer" sense of the word.)