In these tough economic times, or any times for that matter, free is awesome, especially for a solid product.
You can download GFI Backup 2009 here: http://www.gfi.com/backup-hm/free-backup-software.
You can read a cnet review of the product here. To quote cnet, "GFI Software launched on Thursday a free backup and recovery software for home users. Unlike other free software, which tends to be the stripped-down of the commercial version, GFI Backup Home Edition is a full-featured application."
Lifehacker also reviews the product and you can read about it here.