I would have ordered more than one if I thought I could keep them in good enough shape for sale later.
I used to have a supply of cover plates that would orbit the earth if laid end to end but they always seem to get things thrown on top of them whether in the shop or the truck.
It's like stocking cases of flourescent tubes. they just get broken.
Every supply house I've ever walked through has enough room to stock hundreds, if not thousands, of plates without leaving them where they'll get damaged.
I don't have that luxury.