DrivePop offers 50% off its Annual Cloud Backup Plans via coupon code "fiftyoff". With prices starting at $14.99 per year after discount, it's the lowest per-year unlimited backup offer we could find by $35. (Most sites charge around $60 per year.) Each backup option offers unlimited storage and unthrottled bandwidth, but prices increase with how many computers you wish to backup.

Want to sign up for more than one year at a time? Drivepop offers its DrivePop Unlimited 1-Machine 4-Year Backup for $39.99. They also offer 5-Machine and Unlimited Machine Plans for $79.99 and $99.99, respectively.