Some, by being available with cash at the right time have been able to get bikes at similar pricepoint, but I think the one in the classifieds located in Huntsville, AL is closer to what to look for in condition and price. No frills, but looks nice. The thing is, you have to figure what it costs to go get one where it is (travel there and bringing it back). Now if the bike is from someone on this forum and has taken care of it and maintains it properly, I would condsider that my first adventure ride. But if you aren't set up for it, or can trailer it, it could also be a frustrating (even miserable) experience.
Just saying that if I was looking for a second bike, I would only consider one from an unknown source if I could trailer it. If some of the yahoo's on this forum (and I say that with respect) were to sell their pride and joy (it happens, upgrading or health/family), I wouldn't hesitate to bring my gear (or ship it in) and fly in and ride it across the country home (I would look forward to it).
Just saying that the known history can add considerable to the value of one of these wonderful motorcycles. But a very shiney one with lots of add-ons and such, from a unknown, maybe even questionable source, I wouldn't touch it without a thorough examination from a "KNOWLEDGEABLE" mechanic (too many out there may have never seen one because they went through bike repair school since 2003). In that case, I would price it as a parts bike (like the one you looked at in Portland), which he is asking more than that for his bike. Some kid will buy it and then hate all Kawasaki bikes because he had a bad experience (maybe not, but we don't know).
By the way, I could be wrong, but the tread pattern looked like Dunlop 404's, which were the OEM on these bikes and my understanding was they were awful to ride on (I think mine had them and it was night and day difference when I went to the Dunlop E3s). If that is the case, I wouldn't consider them a plus, but rather tires to get it home with and then spring for "good" ones (figure at least $3 to $400 to replace unless you do your own work).
Wow, didn't mean to get on my soapbox. Just Costa, since you travel anyway, maybe consider what I mentioned above and wait for the Gem to come available and be willing to go and enjoy it all the way home.
Thanks for listening,
Ken