What's the street price? With Ultegra, hydro, and Ardennes Plus LT wheelset, it's certainly outfitted nicely. And while Giant is typically a very good value, they chose not to bring in an equivalent (Adv Pro 1 Disc is Di2), so not an apples-to-apples.
As the owner of a DB, I don't think that it has the cache of some of the major brands, and resale value may hurt because of that, but I don't doubt the quality of the bike.