A huge number of posts about portable scanner
The objective of purchasing a scanner should be decided first; if you need it for your business or for your study. Business laptop scanners have lot of advanced features to scan high resolution images of business documents. Definitely, scanners made for business use are expensive than general scanners, that have low capabilities of scanning. Go through different websites on the internet and compare features and capabilities of different portable scanners. You should also closely evaluate the prices at different online stores.