As a saw builder, does it bother you that your customers could get annoyed with a saw that fails or performs poorly through no fault of your work and for unknown reasons? Wouldn't that lead to a pretty serious potential loss for the customer and a risk to your reputation even if you did nothing wrong?
I was recently quoted AU$750 for the modding work for 661 work saws. That was a $100 premium over other saws. Not something I could justify but I wonder if the additional hundy was to cover the risks.