I just ordered a 7.4 update from Zenrin (which actually re-directs to Navteq at
http://www.navigation.com). The price was $190, which then came out to around $219 with tax and shipping. I've been watching ebay for a couple of months and didn't see any 7.4's come up, and the 7.3's were going for over $100, closer to $150, I figured a 7.4 wasn't too much extra compared the the ebay items and then I'd have the latest and greatest, so I just ordered directly from Zenrin/Navteq. I also wanted to make sure that I didn't get a copy as I hear that there have been problems with those.