Yes it sure looks like a scam to me. And note they use a yahoo email address not a company address. I wouldn't go near this.

BIG Warning!!!
This is a chinese scam and those are the same people from china, they post also to most common classifieds online sites - posing as "local" and they will "sell" you anything you want for amazing price, often posting the same images of original boxes as picture. They have gmail or yahoo email (but also sometimes by mistake post their .cn email that's how I know they are from china)
Like this:
http://crazyclassifieds.com.au/yamaha-tyros-4-arranger/
http://calgary.aderk.ca/Yamaha-Tyros-4-61-Key-Keyboard--For_Sale-Music_Instruments/view41079/
http://www.domesticsale.com/classifieds/a632255.html


They totally flooded the cassifieds. Of course most people know better than to buy used item without seeing it in person, but just to be sure - DO NOT EVEN TRY.
I know because I am looking for used Tyros 4 and I was shocked by the huge amount of fakes right in my "local" area and very soon I started to recognize the same reused pictures of boxes or unpacked items and the same text offering international warranty... just one BIG scam for naive people (how many are there still?)
It is sort of tech version of the Nigeria inheritance scam.