You can get a B plate in the stores name as long as the bike ownership is your name. This is what the store I bought mine at explained as did the Beijing Licensing web site. Maybe I misunderstood, but I am pretty sure for foreigners name can not be on the plate. But if you have a company or the store will register you then ou are good for a B plate.
I thought the Benelli TNT came only as a 899 was around 189000 rmb used and the BJ600 naked was 39000.
My friend has a legal Harley in Shunyi with a B plate .... Registered under the Harley stores name.