You can still buy Mac OS X lion and Mac OS X Mountain Lion from the Apple store for approximately $20 each, but they've also been made available for free through Apple support documents.

Apple recently dropped the $19.99 fee for OS X Lion and Mountain Lion, making the older Mac updates free to download, reports Macworld. Apple has kept OS X 10.7 Lion and OS X 10.8 Mountain Lion ...

How-To Apple offers free downloads of OS X Lion and Mountain Lion Take a trip back to 2011 and 2012, when people worked in offices and Apple was still naming operating systems after cats.