very commercial. Brownie.com redirects to brownies.com as does brownies.net. The business there sells brownies. The plural is worth more and there is competition for development with a business already owning related domains. That said, maybe they would be interested in the name. The competition aspect might put off other buyers interested in starting a brownie business but you never know. I think in the mid 1000s would be good.
Definitely not in the 5-digits since brownie-making ain't quite as lucrative as real-estate, and you've got the singular version of the domain. But still a superb name.
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