This Is How You Could Buy Cheap PC Games Before Steam
You could copy that floppy, or pay someone to mail it to you.

While Steam is the place to buy PC games, especially with the frequent discounts, in the '80s and '90s, if you wanted a cheap way to play games, you'd need to turn to shareware. This method of distribution combined physical disk swapping and mail order, at a time when the internet was in its infancy and computer games were taking off in a big way.