Buy.com has the Nuance Dragon NaturallySpeaking v.10.0 Standard software for $29.99. This software ships for Free, and it features:

• Quick Voice Formatting (Delete | Copy | Bold | Underline | Italicize commands)
• New UI Look and Feel
• Improved Help System and Tutorials
• Improved Natural Commands for Mozilla Firefox
• More Flexible Enrollment for younger speakers and users with certain speech challenges
• Regional Accent Support
• Option to Disable Microsoft Text Services (CTFMon)
• Better control of commands vs. dictation on the Web
• Auto Configuration for Optimal Performance Based on System Profile
• Formatting and Word Properties Interface Enhancements
• Embedded Data Collection Tool