Actually, I have the Blu Logic system installed in my car.
If you want it though, I'd order it through TRD sparks and install it yourself. It was actually the first thing I did to my car, and wasn't hard at all.
The only thing I didn't like about it was that it didn't have the steering wheel controls like I thought it would, instead it goes in one of the push-outs on the dashboard, so if your car doesn't come with the heated seats it's actually the perfect thing to install, as it gets rid of the ugly square-thingy (aka the push-out) at the bottom of your dash. (Look on the right side, opposite of the AUX input.)
All in all, I'd say it's worth it. The sound quality is excellent, I've only heard good reviews about it from the people I'm talking with... in fact, so far no one's even been able to tell that I was using the system until I asked them how it sounded. (They said great, btw.)
On top of that... if your phone supports it then you can actually stream full-quality stereo audio to your car's sound system right through your phone. (Great for YouTube videos on the run.) =P
Here's a link... is it still a bit expensive? Yes, but it's probably a hell of a lot less than your dealer's going to ask. (BTW: My car's been serviced 3 times since I installed this, haven't heard a thing about it yet. Well, other than a compliment on my wiring from a tech, but that's a different story. - In other words, don't worry too much about warranty issues with it.)
http://trdsparks.com/displayparts.ph...&parts_id=2848
--EDIT--
Oh yes, forgot to mention... it apparently interferes with the JBL sound system, and also the XM/Sirius satellite radio. If the satellite radio is a necessity for you, though, there are always other options. Here's a picture showing my bluetooth system (the same Blu Logic kit your dealer uses,) as well as my hard-wired SIRIUS radio in the compartment below. As you can see, it matches perfectly and simply uses the vehicle's AUX jack for sound input. The best part about it is that you can simply close the compartment and it's hidden away out of sight when you need it to be.
(Sorry for bad quality... I promise I'll buy a real camera soon!)