Alan Kay shows the Rand tablet [video] (youtube.com)

Imagine the cpu this ran. Also it seems to have cost around $18k at the time it was created (~1960’s). So comparable to small house price.

You can find a higher quality version of this beginning around the 24:20 mark of the video at the link below.

https://youtu.be/p2LZLYcu_JY?t=1460