It seems to happen a lot, but the simple gimmick he claims to have originally created I learned as a
kid in Michael Ammar's money miracles.
However, I don't think it was taught as a bill
transpo. So brownie points to Marsh there.
Not saying Marsh stole it, and he does add a
very slight difference, it's just not anything revolutionary.
I am fairly familiar with Ammar's Easy to Master Money Miracles, and this version of the gimmick is not taught. If you are referring to Patrick page's EZ Money gimmick, surely you can see the difference between the two gimmicks. I have no doubt that Alexander Marsh is also familiar with the EZ Money gimmick and is not so ill-informed as to claim that the two tricks use the same gimmick.
The gimmicks are not interchangeable, and I have never seen the transfer gimmick used in another effect.