In our Store, you can purchase an original Office 2013 license key that will activate your Software. We promised the key is 100% valid. The Home and Business version of Office 2013 costs $39.99, while the Professional Plus version costs $44.99. The product key will be in the confirmation email you received after buying it. It’s a 25-character code, and it will immediately activate your current copy of Office 2013 installation.