I recently redirected from a domain that had "sarchasm" (word play) in it to a domain that had "sarcasm" in it. It's been about a month, and there's a 301 in place. Now look at this: http://estibot.com/results.php?domain=deepsarchasm.com The valuation considering traffic is clearly way too high! I get like 50 uniques a day atm.
Well, seeing as it's automated, you can't expect it to make an accurate assessment.. the site clearly states not to rely on it for appraisals. It does have some handy tools there tho!