I bought the CD at Costco in the store. Well I didn't but my husband got it. There were also boxes for the Online LIVE version. There might have been boxes for just the download Desktop program too. Not sure.
I helped my friend buy from Costco Online. Online doesn't sell the CD. Just the download Desktop, so you have to select Windows or Mac download. And they sell the new LIVE online version. So you have to be careful and watch what you buy online.
So I have experience installing both from the Costco CD to my Windows and buying and installing the Mac Download Desktop program from Costco Online.
