Hmm, haven't made this post in a while. Maybe it's time to do it again.
Toyota/Scion specifically prices the RS grilles rediculously high. They average about $700-900. They do this to limit the number around. They didn't make these parts to sell as accessories, they made them to be special for those particular cars.
So, can you buy one? Yes. Will it take forever and a while to get? Yes. Will it be very overpriced for a grille? Yes.