It's GREAT idea.
In theory. Sort of.
But in paper and in practice, it makes money in the game worthless which would turn into no one getting free DM, ever. Even at the beginning of the game.
Which would also turn into less people getting into the game.
Which means over all loss on the game making money.
Which means DH dies.
Let's not do trading, unless it's HEAVILY restricted.
And even then, I probably wouldn't even try to figure that math out.