Installation Costs

So I've been sweating a BSP tC for the past 2 months now and I've only set aside about 1/3 of the down payment (I want to put down $6000). Obviously I've been going back and forth to scion.com to configure and reconfigure my dream car. But only recently I've noticed that they actually note that installation costs are not included. Now I might not have been paying good enough attention, but I was under the impression that the costs listed on the site did indeed include installation costs. I mean $525 for just the TRD exhaust and no install?? I was already having second thoughts about whether or not I should finance the accessories or just buy the car bone stock and purchase them out of pocket later on. Now I'm really leaning towards just getting the car and nothing else. Another reason I wanted the dealer to install everything was because I would feel better if the factory did it rather than asking a friend or doing it myself. It just helps me sleep better at night I guess. But not if it's going to cost me an arm and a leg. I already think the prices are a bit steep as it stands, so is there any way to have the dealer install the parts without extra costs? Otherwise I'll have to rethink my options.

Any ideas?