as a former owner of a 2010 S200, I was very happy with that scoot. Very simple and reliable. I sold mine last summer for $1200 USD with 4200 miles on it and in showroom condition, so price being asked for the 2009 is reasonable. As one who enjoys fettling with a carb...as long as you ride it regularly, the carb is no problem. Problems arise from going weeks at a time between rides (if you didn't drain your carb bowl). I had to clean my pilot jet many times due to sitting. All that said the bike is as simple as they get...air cooled single with a carb. No fancy diagnostic tools ever needed for repair. great around town scoot. Not fun to ride over 50 mph due to stiff ride...top speed low 60's in a tuck. (check the tires on the S200...from the pic the front looks like the original ..Kenda tire?...check date codes on tires...if original, get new ones, asap).
I had to look up the GT 200i... then realized it was the smaller engined brother of the GT300i. 205cc fuel injected 4 valve, liquid cooled...nice combo! Beautiful bike!
I've always liked the 300i but have never seen one (or a 200i) in the wild. Assuming it's in good condition with reasonable miles, you're right, it is priced strangely low. That scoot should be a legit highway capable scoot, if needed. I would probably pick the 200i...but I'd have to think long and hard about driving 750 miles to go get one...