This is one of those which may never sell, or sells for $xxx, or someone goes batso-nuts for it and hits 4 or 5 figures. I say that because it's requires someone to really like it, rather than it be naturally valuable to the masses and so has a general and obvious market value. So value depends on the budget of the user/business who likes it.
Put it on the major marketplaces and see if you get any interest.
The strong point you have is people setting up antivirus software or pharmaceutical (most likely buyers) have deep pockets, so you might see a nice high 3 or low 4 figure offer.
Definitely something I'd keep listed for sale for a number of years, depending on offers of course.