I'd put a monetary value on the Garmin Nav in the Ridgeline at about $29.00. I have been using Garmin gps units since about 1990 and I don't know if Garmin sold Honda a "bill of goods" or Honda knew they were buying old technology, but that is what we got. Doesn't matter why, we just do. It works, but so does a 10 year old discontinued Garmin portable unit equally well for $49 or less.
I will disagree with zroger73 a bit as he mentioned a $200 (or less) portable Garmin unit would be "comparable" to the built-in Honda unit. I only "disagree" because a portable unit will have more features, i.e., much newer maps, free and frequent (3x a yr) lifetime map updates (compared to 5 yrs. from Garmin w/1 per year), the ability to customize the gps with POIs, sounds, alerts (school zones, red light cameras, speed zone, Diners, Drive-Ins and Dives, :laugh: etc.) and the ability to have the choice to interact with the gps while driving down the highway or not. A portable unit can be transferred easily from vehicle to vehicle therefore leveraging its value.
That said, there isn't a single gps out there that is perfect and probably never will be to any one particular user. I'm reminded many times, not necessarily in regards to a gps, about a cartoon from years ago of two astronauts in a Gemini capsule hurtling through space. One looks at the other and says "You realize we're going to the moon on the lowest bid?" :laugh: