Here is a link to the latest navi disc it is $99.00, 50 cheaper than the going rate and it is from Acura it came via a tech bargain.
The Official Acura Map Update Site | Home | HERE

 

I went ahead and ordered for my MDX, RDX and TSX. $99 is about the cheapest I've seen it for a brand new disk. I usually go to eBay and get a used disk from 1-3 years ago. I can't do the eBay thing with the MDX with the newer hard-drive set-up. Navi update DVD is tied to your VIN/Navi S/N and they give you a code to input before you start the update on the MDX.

 

I picked one up for my 07 RDX, with tax etc. it was about $110.00 U.S. And definitely worth it

 

why buy a disc when you have the phone nowadays. Use Waze that you get traffic and cops alert at same damn time.

 

I don't always have 4G or 3G coverage on my iPhone in the southwest for hours when traveling. In car navi/traffic/weather integrated with the stereo and phone is the 95%-99% for me when traveling. I still have the iPhone if the navi lets me down.

 

Tired to navigate Dallas over the weekend with an outdated GPS......will be ordering an update disc!

 

Built-in navi is more convenient to use (especially when out in the boonies where signal doesn't exist), but phone is always up to date. It can be a tough choice sometimes...can't wait till the Android and Apple integrated systems are widely available.