Hey Ian, i clicked on the link you provided but found nothing more than an “error 404 – page not found”
Lucas, If you can read Chinese then i recommend http://www.moto8.com as a great resource for finding decent bikes and parts in Chengdu. Also 58.com usually has a good selection. With regards to your budget, it really depends on what size/model of bike you want. But 20,000 rmb will get you a pretty sweet ride imo. I’ve been riding various motorbikes in Chengdu for a little while now and the only paperwork i have is the bikes little blue book. I drive inside the city regularly and have never had any problems with police, yet! If they did try to stop me i would just keep on driving but it you do something like this you do it at your own risk! Oh, i should add i’m currently riding a kawasaki kz250 (Cafe Racer style)
Good luck bike hunting and let me know if you want to go for a ride someday. Me and a few friends will be heading out to the countryside most weekends i think.