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.