Nothing that involves time and/or money is easy to implement. Not (only) because the code would be hard to write, but because what is at stake. Also, letting mo

Nothing that involves time and/or money is easy to implement. Not (only) because the code would be hard to write, but because what is at stake. Also, letting money flow back to the customer can lead easily to money laundering/legal problems. So, maybe it is not "technically difficult", but it sure costs more money to make it possible, than other things.