I have also had players who thought that dickoring with shopkeepers over prices was fun and memorable and contributed to an exciting, memorable story. And those scenes
always have something at stake (where gold is a valuable resource). So let's put the shoe on the other foot. If such scenes are fun and memorable, then why don't you, as a DM, include them in your games? After all, how can such scenes be a waste of time when the goals of play are that everyone has fun and helps contribute to an exciting, memorable story?