To buy a Microsoft Word product key, you must choose between a (perpetual license) or a Microsoft 365 subscription . While individual product keys are still available for standalone applications, most modern "keys" are linked directly to a Microsoft account during the purchase process. 1. Standalone Product Keys (One-Time Purchase)

: Ranges from $149.99 at Office Depot to $179.99 for a full 1-user license at B&H Photo .

: ~$99.99/year or $9.99/month for up to 6 people.

: Often more cost-effective if you also need Excel and PowerPoint.