But check being the cheapest form of transaction--that's nonsense. I might be the least involved method but check transactions are far from the cheapest--there's a reason why financial institutions, business, etc prefer electronic processing.
Yes, there's a reason why financial institutions prefer electronic processing... money. You think all this money is being transferred around the globe for free? You've heard of companies like ADP right? They get PAID to facilitate transfers of money, payroll, etc. Ever hit an ATM? That's YOU getting hit. But behind the scenes, every time money is moved from one location to another, you can be rest assured someone is taking a cut.