What about “warranties/certifications” at no additional cost?

The easiest way to answer this question is to ask yourself, “When was the last time I got something for nothing?” Such warranties and certifications are primarily marketing devices. When read carefully, they often provide little or no protection. Typically, inspectors offering these will not certify a component unless they are absolutely certain that, given the age and condition of the component, no conditions (outside of the conditions they specifically disclaim) could possibly occur. Whenever speaking with inspectors who sell insurance or provide “free” certification programs, ask them about their loss ratios as well as their reserves for claims and request documentation of such information before considering engaging their services.