Need throttle positioning sensor...available alone or need throttle body too???? on 2007 Jaguar S-Type

Gas pedal stops responding suddenly. Garage says throttle positioning sensor
is indeed culprit after quick check. Dealer service says to put on a new throttle
body for a huge amount! Confused. Is the TPS available separately for this
Model/2007? Or is it sold only together as one part? Thanks.

Asked by for the 2007 Jaguar S-Type
Tps and actuator are separate parts.