How much memory does your parents and grandparents computers have? There are a lot of people out there with older computers, probably even some that you know :)
My uncle bought a $350 trash Windows PC a couple years ago, literally the cheapest thing I could find on sale at Staples, and it came with 12GB of RAM.
$450 in 2015 would have bought you a Dell laptop with 6GB of upgradable memory:
https://www.laptopmag.com/reviews/laptops/dell-inspiron-15-5...
My uncle bought a $350 trash Windows PC a couple years ago, literally the cheapest thing I could find on sale at Staples, and it came with 12GB of RAM.