I found the cheapest price on the internet, then I went to my local dealer and asked them if they would match it. They did, and it was here and installed in less than 24 hours even though they didn't stock it. It was cheaper than Sparks, which everyone seems to promote as being the cheapest.
I will say that the TRD sounds awesome! It does drone like hell at about 48-55 mph, and if you have one and don't notice it, then you either have a different exhaust or you're deaf. It is pretty much unbearable towing a boat on level ground at 50-55 mph if you're in 5th or 6th gear.
I just wanted to put that out there, because I researched extensively before buying, and the general consensus was that there is no drone with the TRD. I would advise others to take that opinion with a grain of salt. Under the right conditions, there is plenty-o-drone.