Article doesn't mention a big audience that would be very interested in cheap book scanning: the print disabled. Blind and partially-sighted people are the most obvious members of this group but dyslexics and others who cannot read normal print would also benefit. Many books are of course already available through libraries for the blind but if you need less-popular or specialised texts you are out of luck. With an a…
This doesn't OCR them, it's just an image, so the blind are still out of luck.
Edit: http://1dollarscan.com/pricing.php says "OCR stands for Optical Character Recognition. The PDFs will contain the OCR text layer behind the images to make the text searchable and selectable." This service is labelled free so I guess you get it (or can get it) for each scan.