Not long ago Sony released worlds smallest HD video camera. Now a company called DXG has released worlds cheapest HD camera. though it is not true HD i mean it supports 1280×720 (720p)  @ 30 fps resolution not 1080 i or 1080p. It costs just $169.

Specification:

• 1280×720 @ 30fps capture capability
• 5 Megapixel CMOS sensor
• still image capability upto 8 Megapixel
• 3 inch swivel TFT screen
• can be used as mass storage device
• store video on SD card (SDHC)
• view video in 4:3 or 16:9 wide aspect ratio
• comes with Arcsoft total media extreme software for editing the videos
• formats: H.264, MOV, JPG (images)
• 2x digital zoom
• digital video recorder for video notes
• USB for connecting to PC
• black and silver color