Or the unit price of scanning documents and storing them in the computer?
The cost of scanning documents is machine wear and personnel salary. How much is your A 1? . . The meaning is not very clear.
If you bought a scanner, you can specify the maximum format to scan. Minimum scanning parameters: color (gray, black and white), resolution: 300dpi.
If you want an A4 scanner, I can recommend:
BenQ 5560
Basic parameter
Product use: commercial application/personal home error correction product type: plane error correction maximum format: A4 error correction scanning element: CCD error correction optical resolution: 1200x2400dpi error correction maximum resolution:19200 x19200 dpi error correction scanning range: 214 x 2900 dpi.
Performance parameters Color digits: color: 48bit, gray scale: 16bit Error correction gray scale parameters: gray scale: 16bit (input/output) Error correction Double-sided scanning: Manual error correction Network scanning: Error correction is not supported.
Other parameters
Product size: 4 12×258×73mm error correction product weight: 2.2kg error correction operating system: Windows XP/2000 error correction power supply type: 16V, 0.9A error correction working noise: less than 50dB error correction environmental parameters: working temperature: 0-40℃, working humidity:1.
Packing list of scanner accessories: host x 1
Power adapter x 1
USB cable x 1
User manual x 1
Random CD x 1
Warranty card x 1 error correction random software: MiraScan scanner driver
Electronic document user manual
Acrobat Reader(PDF reading software)
ABBYY FineReader Sprint (multilingual character recognition software)
Hanwang OCR (Chinese and English Character Recognition Software)
MergeMagic (enjoy large format scanning)
Ulead PhotoExplorer SE Basic (multimedia management software)
Ulead PhotoExpress SE (our own software) error correction
I don't think you're asking about printing either. . .