The price range for a genuine, traditionally crafted Japanese sword can vary greatly depending on factors such as its quality, condition, age, craftsmanship, historical significance, and the reputation of the swordsmith. Authentic Japanese swords can range from a few thousand dollars to several hundred thousand dollars or more.

Antique Japanese swords, particularly those with historical provenance or linked to famous swordsmiths, tend to command higher prices due to their rarity and cultural significance. These antique swords can be very expensive, reaching into the six or seven-figure range.

Newly made Japanese swords, crafted by modern swordsmiths who follow traditional techniques, are also available. These swords are often referred to as Nihonto or Shinken. While they may not possess the same historical value as antique swords, they are still highly regarded for their craftsmanship and can range in price from a few thousand dollars to tens of thousands of dollars.

It's important to note that the purchase and sale of Japanese swords can be subject to legal regulations and restrictions in some countries. Additionally, the market for Japanese swords can be complex, and it is crucial to ensure authenticity and provenance when making a significant investment in a Japanese sword.

If you are interested in acquiring a real Japanese sword, it is advisable to consult with reputable dealers, experts, or specialized sword auction houses who can provide guidance, expertise, and authentication services to ensure you make an informed and responsible purchase.