I was watching that knife on ebay too!  There have been a few that pop up every now and then.  There was even a Doug Ritter fixed blade available on ebay about the same time as the knife you were watching.  I have been monitoring ebay for about 4 months and the final bids for the new knives are not that far away from the original sales price (when you include some seller's shipping and handling charges).  I concluded that it was better to spend a little extra money and buy through a known seller and help support a great cause.  Believe me, that was a big decision for a bargain shopper like myself.
BTW, I ended up buying the RSK Mk4, Gentlemen's Folder, which is never on ebay.  I was honest with myself and decided it fit my current lifestyle better.  I could not be happier with this knife.