Anyone knows where and when we can start buying this RET coin?

Puercoin, along with dozens of xxxcoins, are traded on a for-China-only platform, under ticker PEB
https://www.jubi.com/coin/trades

The issue price is $1, and now traded at $0.15.

Puerbank is probably going to digitise the values of the homes in the form of Puercoins for trading outside of China.

Hi, I have invested some money in the Hills of Windridge property development scheme and recently received a notice from the group founder that PBG group will pump in 600 plus millions $ to fully develop all the projects undertaken by the group. No other details were given, not even making an introduction of the PBG group. So investors are left on their own to find out details, and some just lodged a police report claiming to have been scammed.

Looking at the Puerbank group, I am very doubtful they are going to transfer USD cash into the A2A Group of companies (consisting of Serene Country Homes, A2A Capital Investments and all other property developing companies undertaking the projects like Serenda, Hills of Windridge, Fossil Creeks and etc).
I am guessing that they will issue Puercoins to acquire the projects, and then investors are free to buy/sell these coins on the market, just like they would do with Bitcoin, Onecoin and etc if they had them. 

After the big marketing campaign, there is hardly any new news about Puercoin outside of China. Most of the internet media & websites have taken their news offline. I can only find www.prweb.com still keeping the news on Puercoin.  They do have a Puercoin app for Apple phones, but not for Androids.