Coil Isolators?

Hey there. My Titan is going in Thursday for the ProComp 6" stage one. I have the Daystar 2.5" leveling kit on right now. The mechanic just told me that they need the stock coil isolators inorder to put the lift on. You guessed, it, I didnt ask for the stocks ones from the shop last time. Does anyone know where I can find a set without going to the dealer? The guy at 4wheel parts said they can run for up to $150 a pop, is that right? Thanks for your help fellas, it's going to kill me if I cant get some before thursday!