Replicas of Michonne's katana from "The Walking Dead" can vary in price depending on factors such as the brand, materials used, level of detail, and where it is purchased. It's important to note that the prices can change over time, and availability may differ depending on the specific replica being sought.

A decent quality replica of Michonne's katana typically ranged from around $100 to $300 USD. However, more high-end and collectible versions, such as officially licensed replicas or those made by renowned sword manufacturers, may have higher price points, potentially reaching several hundred dollars or more.

If you are interested in purchasing a replica of Michonne's katana, I recommend researching trusted online retailers, specialty sword stores, or official merchandise outlets associated with "The Walking Dead" for the most accurate and up-to-date pricing information.