Shift solenoid
 

I have a 2000 f250, the code was for shift solenoid b malfunction. Thru My research it seems like I have to replace the solenoid pack. The only placenthat I found one was at the dealer for $360. Before I buy it I would like to know if there is somewhere else I can get pricing from. None of the parts store locally have them. Maybe on the Internet there is a place? Thanks in advance for any help on this matter!!!