I just checked my old catalogues and I noted console games are higher than pre-NES.
Before NES, console games are around $10- $40. Computer games are around $30-$60.
With NES and other consoles starts having games the same price than computers, around $40-$90. Commodore 64 has lower price games.
Only Atari 2600 has decent prices around $20-$35 until 1992.
$ = Canadian dollar.