Ivan, some local employers and even officials that I know better claim that HK isn't allowed to offer Z visas anymore. If some foreigners get Zs there, it might be for a bribe or two. We know how it works around, don't we? Z visas are to be obtained in our homelands, and RPs on mainland. Ls are not for RPs on mainland, although I myself have had them changed to RPs many times. A year and a half ago, Chongqing had no pro converting my L, but that doesn't mean it's legal. PSBs do what fits the city and them, don't they? Cities that have many foreigners will not bargain with the local employers or us. I would not pay anyone 5, 10 or 15 thousand Yuan for my visa.
Cheers and beers to Jay, whoever he is, wherever he is from, or whatever he wants to do :)