TRD Superchargers are currently produced by Magnuson in Ventura, CA
TRD Brake kits for the US market are normally produced by Stoptech in Compton, CA - Stoptech has released a BBK for the FRS/BRZ -
83.827.4700.71 (Priced under 3k MSRP)
The TRD kit you are referencing is a F+R BBK that retails at 890,000 JP or yes over 10k US, but I am pretty sure it is a stop tech kit.
TRD makes a lot of its own products, designed at TRD USA in Costa Mesa, CA
TRD Japan or Toyota Technosquare designs & builds a lot of the hard parts you see, suspension components as well in Yokohama, JP
TRD private labels a lot of parts designed by USA based manufacturers.
Hope this helps!