One is the old style doeskin look and the other is a braided finer and thinner leather. Both styles are presentation grade and not for martial arts usage. Stick with silk for that usage. Tsuka can be had in most any length. Basically, I charge for time and materials plus an art value.
Every sword is priced individually.
They are highly polished and if used for cutting or hacking, it will stain and smear the polish. I make a martial arts sword that is cheaper with a much less fancy polish and pebbled black lacquer sheath. They are called the Musashi Series and it comes in only one style with no options available. I spend a great deal of time on research, and I endeavor to make my swords as historically accurate as possible. The balance and weight are virtually identical to the originals.