Napleton's of Rockfrod prices are too high!

[bmx672]

Okay, so my plan is to buy a used deactivation bar and seat so my child can ride in the Boxster. So I call up Napletons and ask the price on just installation of the bar and the service guy said $519!!!!! Are you kidding I asked, for just installation of the parts I already have? I said it should be an hour of service time and hung up on him.
Has anyone in the Chicagoland area had this done for less? If so please help me out here. Or heck point me in the direction of someone with a computer than can do this and I'll gladly pay them for it.
I think $519 is a little steep for a half hour of work...