If you break something or something doesn't include accessories, Hasbro springs for shipping. I've bought Star Wars vehicles before that were missing things and they sent me a label for shipping. Sure it takes a (long... long...) while to get it back, but they don't make you pay to ship it to them.
I'll sing my song to the wide open spaces
I'll sing my heart out to the infinite sea
I'll sing my visions to the sky high mountains
I'll sing my song to the free, to the free
i read on the seibertron boards that if it's an in-demand product, hasbro retains the right to send "an item of equal value". someone sent in an 08 bumblebee and was given in return some movie legends figure. lame if you ask me. also, not worth the time or effort.