Look, the rent is cheap, and if you want to bring scrap in to pay the rent then that's fine, so...okay? As for katanas, I got a good amount of them in stock. The one you're looking for would be something like this.
*Suddenly, a short katana and sheath suddenly appear on the counter.*
It's sharp, easy to use with one hand, and it's got a good grip on it. It's been enchanted to be easier to focus on weak points in whatever your fighting so you can take them down easier. I'll sell it for 3,000 yen. Pretty cheap, but I've got a surplus of them. Besides, custom weapons are much better than stock weapons