I bought as "sold by Flintstones Store" this product. After downloading the install package the product key was rejected as invalid. After several attempts - one believes so only to its own fault - demand phone at Microsoft - the Key is part of a 2011 Office for Mac. On the supplied Key Card was big and fat "Office 2013 for PC". Bin pissed - the whole thing has me and a colleague tasted several hours, do not bring me back, the reversal of the deal. It may be that "my" seller has since been kicked from Amazon - it indicates the changed product appearance. After all. Nevertheless, should not such a thing happen and I see some of the responsibility from Amazon itself.