3D Systems new Sense 3D scanner, at $399 including software, is a serious competitor for Makerbot's $1,400 Digitizer scanner.
The new Sense scanner is hand held and you have to slowly wave the device at the object being scanned, watch the viewer to insure coverage, and scan until you are happy with the visual effects.
The MakerBot Digitizer is a turntable where cameras and lasers do a 9-minute scan while the table slowly turns. There are many enthusiastic reviews for this scanner.
As costs of 3D printers continue to drop, these two new low-cost 3D scanners add to the magic of 3D printing by enabling users to easily make scans. The scanners can also be used for other activities like gaming, cake manequins, clothing marketing, etc.