Only person getting rich is the man who posted the ad!

Popular mechanics still had those cheesy/scammy mail in ads when I read it in the 90s.

I always wanted to build the hovercraft you could supposedly build with old vacuum cleaners, but in my heart I knew it either wouldn't work or would be super expensive for a kid.

I wonder if some YouTuber has tried building from those scammy old plans...

https://archive.org/details/getrichinspiteof00graf/mode/2up

Hey hey hey, it never promised quick.

Seems everything you'd buy through the mail in those days, both sham and legit products alike, was sold could be bought C.O.D.