Sometimes I just have to admit it. That was a total waste of money. The chances are, my wife would make this list 50 items long that I have wasted money on, but sometimes you need that balance. Yet even if you resell something, there is still generally a loss to take and beyond that, your time in experimenting, fiddling, or learning is also a cost to bear sometimes.
So here are some things that I know were a complete waste of money for me..