I got the FET replaced (6 pieces) at the former EGR track for HKD2xx. That was many years ago when Kyosho first released the Overland line of Mini-Z.
IMHO the current price is not expensive if you take into consideration of the inflation for the past couple years after SARS. Just think of how expensive the rent is right now, you'd know it is a miracle for Mini-Z track to survive.