Looking through stuff in my basement I found these. I had them since at least 1995, I wish I had the ones I sold to Manions back in 1990's. It is a large poster.
First one is a poster from town of Radom, General Government. Signed by Karl Lasch, governor of Radom District.
It sets official buying/selling prices for food, and services. Prices of services for transport, communication, restaurants and hotels are to remain same as of 1 September 1939.
In certain cases when the prices of materials went up, and one could prove it, one could raise the price by no more than 40%.
Also interesting the price difference between Towns of Kielce, Piotrkow, Czestochowa.
Last paragraph says that violators will be punished, in certain cases by Death. For gauging prices will all will be held responsible: buyer, seller, purchaser and provider.
Dated 26 January 1940.