Newegg offers a selection of software for Windows, Mac, and Android for free via mail-in rebate, as listed below. Plus, all orders receive free shipping. That puts each model at the lowest total price we could find by at least $13 and by as much as $56. The software, with rebates and expiration dates noted:

• Bitdefender Sphere 2013 for PC, Mac, and Android for $0 after $60 rebate (ends 12/30)
• Acronis Disk Director 11 Home for PC for $0 via $30 rebate (ends 1/2)
• McAfee Total Protection 2014 3-User for PC for $0 via $58 mail-in rebate (ends 1/2)