First of all SGS was recommended by Ebay as a "to do" thing when buying a car over the internet. SGS is a "partner" of Ebay. While promoting its "partnership" when I complained to Ebay they said my only remedy was through SGS which turned out to be no remedy at all. SGS wouldn't even turn over a copy of its second inspection. To dispute the SGS would require arbitration and an initial $500 fee to initiate. Cost prohibitive.
Then went through all of the Ebay protections; first the mediation which had no teeth in it at all and only received a nomimal payment for "good will" and not posting a negative feedback.
Then went through the Ebay Buyer Protection/Fraud program and provided all of the information they required. Even had to get a third independent inspection. End result was a finding that the item was not "substantially" different from what was advertized. I think $1470 on a $31,000 purchase is substantial. The remedy to dispute their finding is to mediate in San Fransico. Can't get to the Square Trade remedy because it requires a position finding from the Ebay Fraud program.
End impressions-don't buy a car over the internet unless you personaly inspect it. Every step you take other than personal inspection is without a meaningful remedy and the way the programs are designed are to frustrate the claimant and discourage anything other than a class lawsuit.