People usually buy grade Aa+ counterfeit money online through trusted who use much advanced printing process, coordinated services, stress on quality so the counterfeit banknotes they produce has value means one can spend it in small retail shops in cities & villages, amusement parks, shopping, traveling, eating at restaurants.
Every currency of the world is unique which has its own security features peculiar properties like shifting colours, various elements & holograms. This is all a difficult process and it is teamwork where there are printing experts taking care of printing quality, bankers who have knowledge about all security features & elements in the various denomination of different currencies.
The main process is handled by IT technicians. Because it is their expertise in working on printing machines that actually brings marvellous results. Counterfeit banknotes of different countries are available but the currency that is always in demand by agents and buyers are the US, CAN, AUS Dollars, British pounds & Euros.