I got 15 months of Office 365 with 1Tb OneDrive storage for ~$55 at Costco.
Just thought I'd mention because I normally wouldn't have thought to go to Costco for Software, but it's a great deal and they just give you a code that you redeem from Microsoft's website. It has worked great so far! Cheapest place I know for buying Office.
Before Windows 8 made anti-viruses obsolete, they used to offer AVG for around half the price it was online. I'm not sure any longer because I haven't found the need to install one since then.
Just thought I'd mention because I normally wouldn't have thought to go to Costco for Software, but it's a great deal and they just give you a code that you redeem from Microsoft's website. It has worked great so far! Cheapest place I know for buying Office.