Re: Visiting Shenzhen...buy direct?
Now most of those sample models or rejected copies are sold through online (Taobao to be exact), so I wonder if there's any place in Shenzhen you may easily get them...there are quite some sellers from Shenzhen but I wonder if they have a physical store at all.
You may try the toy wholesaler market in Guangzhou though, I heard that there were some shops selling Herpa at quite a low price but I'm not sure if they still sell them now.
R.I.P. Dragonair (1985-2016)