I'm going to go against custom a little bit here and stay awqy from a whse appraisal- frankly in this instance it is more difficult to pin down the amt a reseller would pay for the name than it is in attempting to peg an enduser price.
I like the name alot, because it is at once descriptive and highly brandable. Additionally, the awareness that human beings have, regarding their microbial competitors, is increasing dramatically and products of this nature are ahead of the curve. I wouldn't sell it for less than $500 and think that you could perhaps get substantially more for this name if you hold onto it long enough and play your cards right. Good luck. Nice name!