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I can see value in aass--it's a pronounceable all-premium letter LLLL .com, but I don't get ch35.
Not much demand for LLNN domains, unless it's a popular combination.
It might have had residual traffic/backlinks (I own a domain once owned by Oprah's company, and I still get traffic from her old backlinks, even after two years).
Sometimes, it's just lemming behavior--people get all hepped up in auctions and go overboard on their bidding.
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