Instructions
Check with local authorities to find out if there are any local, state or other laws that prohibit or restrict the purchase or possession of a katana sword. Ask if they require any special permits, handling or packaging when taken from place to place.
Determine the type of katana sword you want to buy. A decorative sword costs between $100 and $500, an authentic battle quality katana costs between $2,000 and $5,000 and an antique artifact can cost from $10,000 up to more than $100,000, depending on its age and condition.
Purchase or order a decorative sword from a local shop or knife store. There are many types available, from standard katanas to replicas from movies and television.
Search for a master swordsmith. Commission a specially-made, battle worthy katana or purchase one already made. Wait for the specialty sword from the swordsmith. A professionally created battle worthy sword can take weeks or months to complete, based on the artisan's schedule. Each sword is crafted by hand and is unlike any other created. The overall price considers the crafting of the sword as well as any decorative hilts or other artistic work done on the blade and handle.
Search major auction sites such as Sothebys or Christies, or contact a private collector and negotiate a trade or purchase for an authentic, antique katana.