Traveler's Sword is a weapon usable by Link in Hyrule Warriors: Age of Calamity.
In-game description: A very common sword often kept by travelers to fend off small beasts. It's fairly durable but a bit unreliable against monsters.
The base cost to enhance it by fusing another weapon to it is 50 rupees per weapon used as fusion material. This increases to [X] rupees when the weapon to be enhanced reaches X level.
Sell value varies with damage and any seals on the weapon. I'm not tracking every variation.