Since Microsoft has stopped selling Office 2013 directly, you must look to third-party retailers. Be cautious of "too good to be true" prices, as these often involve unauthorized volume keys that may eventually be deactivated.
To retrieve your product key, you can find it through your Microsoft account or by checking your system if it is already installed. Note that Office 2013 reached end of support on April 11, 2023. Methods to Find Your Product Key product key for ms office 2013 top
If you need to confirm which installation matches which account, you can use the Command Prompt to find the last five digits Spiceworks Community Command Prompt as an administrator. Enter the command based on your version: 32-bit Office on 64-bit Windows Since Microsoft has stopped selling Office 2013 directly,
: If you purchased a digital copy, search your inbox for "Microsoft Office" or "Product Key" from authorized retailers like Walmart or ITFactory. Purchasing a New License Note that Office 2013 reached end of support