Would 売り手 be the right word for a store clerk? What about cashier? means seller or vendor. Could it also be used in reference to the cashier, or perhaps a store clerk? Or would that not be correct because (Example: they are just in charge of collecting the money for the book that is being sold at the store?) > I was cheated by that vendor. > > > > The guy selling that house told me he’s selling it because his neighbor is a real jerk.

Usually you don't refer to a person in charge of cashier as but , or depending on what and how they sell.