This must've been an oversight, either that or it is a terrible design choice. I noticed this the other day when I wanted to go look at accessories.
I work in eCommerce, but you don't need to be in that field to realize that the more mouse clicks you put between your product & a customer, the less conversion to sales you'll get. Also, hiding sales in the support section is not a good idea. I realize accessory sales is not their #1 priority, but having owners (and fans who are non-owners) buying your branded gear is a good way to get your name out there when you don't advertise traditionally.