From Byte Magazine, April 1981, Unclassified Ads, Page 414:
https://archive.org/details/BY...
MUST SELL: One slighty used Cray-1 -- too big for my apartment. Hardware included: light-dimmer interface, toaster interface, one home-brew 64-bit parallel I/O port with Nixie-tub indicators, coat hangers, extra buffing powder for instruction buffers, one box of bootstraps. Software included: CAL assembler on thirteen cassette tapes in Kansas City format, Morse-code trainer, tic-tac-toe game, 8080 emulator. Price is negotiable.
Byte magazine April issues always had gags like above. The one I remembered about the Cray-1 was he was selling it because he was switching to wood heat.
If only they knew back then that we would be using much faster computers than Cray just to play solitare.