Ending today, Newegg offers ESET CyberSecurity for Mac, model no. EAVHM-N1-1-1-RBX, for $14.99. Redeem this $15 mail-in rebate for a final price of $0. With free shipping, that ties last week's mention as the lowest total price we've seen. (It's also a current low by $13.) It features on-demand and scheduled scan capability, file and folder drop option for quick scans, and removable media scans.