If you are not going to do the exhaust work yourself, you may find that the dealer is competitive in price. Also, the dealer here will warrantee their replacement exhaust system. This can be important, because exhausts usually don't live very long.

The plate lights may be burned out. They leak. Water seems to get sucked up there, and causes the plate light to be (on my car) the shortest lived bulb. Clean up the holders, replace the bulbs if they are bad, then gently RTV the lights back up there.

As far as tune ups and one-size-fits-all parts go, you do get what you pay for.