Apologies in advance... I feel this is within the subject of the original question.
I am Australian, newly emigrated to Yangzhou, Jiangsu province.
Last January I personally saw some Yamaha 250cc bikes in the local shops, this morning meiyo apparently.
Last January I had been told I could only get up to a 250cc in this city, and only if living in western district.
An earlier post mentioned a Galaxy dealer in YiZheng city just west of Nanjing, my wife tells me its very close to me, and Suzhou.
Xiao Fei, the lowai from Suzhou posted in 2009; are you still living in Suzhou?
So far the Yizheng Galaxy dealership sounds like my best bet.
BTW, I was motorbike licensed in NSW Australia, and have managed to get that transferred into my new Chinese driving license.

http://www.guorui888.com/
I also found this website, which falls under the 'If its too good to be true, its probably a scam!' category.
My wife rang them and spoke briefly to a 'Salesperson'. Asking the obvious question of why are the bikes so CHEAP!?
( A 2010 Yamaha YZF-R1 is listed for 2500yuan!! less than my mother in laws 125cc scooter!)
They answered something about they they are smuggled bikes, and they sell them on behalf of customs?
I expected to find some feedback on the internet indicating they are scammers, and victims of assumed scam would have posted some warning somewhere.
If you have time please take a look at the website, there are some nice pictures at least ;)
Has anyone heard anything about this site? or similiar sites as to whether my application of Okhams Razor is appropriate?
I.E. The most obvious answer is usually the correct one.

Cheers and beers! Murrance.