Tvad, this is a really interesting subject. I believe that there is already an implied warranty in acceptance of the use of this site. That is that the product must conform to the description in the ad upon being delivered to the buyer. If you search the disputes section, the inscrutable Audiogon management has opined numerous times that this is the standard. After arrival in conforming condition, the onus is on the buyer, and that is as it should be, in that we are not businesses, but hobbyists, that make a risk/reward decision to purchase at a greatly reduced price.