Hold it, fiream !!!
That's how most of the SCION's are anyway. I bought a base car (with the side airbags installed from the plant) and then had the iPod radio, spoiler, wheel locks, etc installed. The radio that came with the base car was already there.
I did not have to pay any installation for any of these and you should not either !!! They should not charge you anything if you order these accessories when you made your purchase.
I'd say that you back out and talk to them about this or ask another dealers about this.
Good luck !!!

That's how most of the SCION's are anyway. I bought a base car (with the side airbags installed from the plant) and then had the iPod radio, spoiler, wheel locks, etc installed. The radio that came with the base car was already there.
I did not have to pay any installation for any of these and you should not either !!! They should not charge you anything if you order these accessories when you made your purchase.
I'd say that you back out and talk to them about this or ask another dealers about this.
Good luck !!!