ESET Smart Security 4.0 Anti-Virus Software (3-User) $23.99 Free Shipping Lowest Posted Price. Newegg has the ESET Smart Security 4.0 Anti-Virus Software (3-User) for a low $23.99 Free Shipping (see price in cart). Tax in CA, NJ, TN. Typically we find the anti-virus 3-user license at this price. Today this set includes the security suite, not just the anti-virus by itself. With a personal firewall, antispam, and the award-winning ThreatSense technology, this software suite uses multiple layers of threat detection to deliver the most effective protection possible against new attacks. We use this antivirus software and it doesn't take up much memory or space. http://www.techbargains.com/jump.cfm?clkSubId=C281135C0A00281135A0&afsrc=1&id=488&arg=N82E16832114010 Shows up as $89. Once added to cart changes to 22.99.