Conder - how about Star Grading Service (link)

DHeath

Here's one I haven't seen, and they guarantee your purchase price for life.

Link to auction

Conder101

I first saw those about a month and a half ago, too late to get into the first edition of the book. I do have pictures of them in my notes andI have their website book marked. As for the guarantee, it guarantees authenticity only and it isn't the best such guarantee. I know of one service that guaranteed double full stated value and another at full stated value plus interest at the rate of 14% per annum since the date of encapsulation. Of course both of those companies have been out of business for over a decade now so I would expect it to be a little hard to get the guarantee honored. I seriously doubt if they, SGS, are losing any sleep worrying about having to stand behind their guarantee.