Is mountain lion officially available on a disk ? I would like to upgrade but because my internet provider has these idiotic limits I would use up half my monthly allowance just with one upgrade. I am in an area where the internet provider has a monopoly.
Unfortunately, Mountain Lion is only offered as a download from the Mac App Store.
I know that it's disappointing, but one thing you can do is to download Mountain Lion once and copy the installer to an external drive, so you won't have to download Mountain Lion each time you want to reinstall it