It's true, but he can not let the scammer go unpunished, everyone knows that the prices of lawyers are expensive and many times the process is much more expensive, but the person knows that the pleasure of seeing the scammers in jail has no price because you is contributing to take another thief out of the streets that is infecting our society. Of course if OP does not have more money and time then better give up and take care of he's life
Often issues related to crypto-currencies especially when a trade is involved, cops don't take it as seriously as other internet crimes.Since there are no rules governing bitcoins, the process takes time to call the scammer a convict.I'd still say it's better to take precautions than wasting your money,time and efforts on something that wouldn't possibly have a positive outcome.