I do a bunch of leather work with our laser for a local rodeo guy. We have loads of scrap pieces so the leather didn't cost me anything.
It cuts easy with a stanley knife & a straight edge, so I made a jig to cut them out so they dont stink up the place like lasering them does.
I upcharged $12.50/corner for them. I have a local Tandy Leather store, so I can buy whole sides if I need to.
I agree that it is overkill, but some customers seem to like the option.