I agree. It's happened to me because as you say, there are arseholes out there, but it would cost me more to try and retrieve it than it would be worth getting it in the first place.
therefore, I let it go.
You know what mate? I have always found, without question, the most trustworthy and reliable payers are those that struggle in life and don't actually have the money. They still pay.
The more money people have, the more likely they are to argue over a couple of hundred $ or a few k's.
That's why I'd rather do a job in Mt Druitt than Centennial Park or Potts Point.
I know I will get paid from the people in Mt Druitt. Every single time.
The only time I've ever been screwed by customers, it's been from rich and famous suburbs.
f**k them.