Amazon is currently offering the Sling Media Slingbox 350 for $148.99.  Use coupon code “SLING350” to take an additional $30 off, bringing your final price down to $118.99.  That is the best price I could find for this by far.

• Extend your living room TV experience in sparkling 1080p high definition.
• Connects to your digital video recorder (DVR), cable set-top box or satellite receiver via component or composite sources.
• Ethernet connectivity
• Compact design
• Watch and control your TV and all of its programming on your compatible smartphone or tablet using SlingPlayer software (sold separately).