I would times a Kunming distance by 4 to get the equivalent in Beijing distance

you probably won't be able to get a new visa in either HK or KM till Thursday, so you may as well estimate your costs for a visa run now against your possible visa fine.

a lot of herb seeds are sold on Taobao

I hear that June 28 is the big day,,as is set now,,anyway,,,

I went to HuiYing last week together with my son, was good, all up we had: 2 annual check ups, one chipped tooth capped and one cleaning, it cost altogether 300 rmb, not bad value. They accepted cards. It was clean, Dentist spoke English and Chinese.

The only thing to keep in mind is that its popular and you should call first for an appointment.

I am sure there are other private places as well that are of similar quality, but for cheaper I think you probably will have to skimp on privacy and maybe cleanliness.