The ADS-3600W is Brother's top of the range model for SMBs and therefore commands a rather steep price (Ebuyer, who provided us with the sample, sells it for £580). But then it operates in a niche market where competitors are few and far between.
This standalone scanner is easy to operate thanks to an intuitive user interface, plus it's reasonably well-rounded on the connectivity front, and is quite compact.
The ADS-3600W is fairly expensive on the face of it, but that said, most other networked scanners with an automatic document feeder capable of this sort of speed cost just as much, if not more. The scanner did suffer from misfeeds but that's something likely to happen across ADF-equipped scanners.
Brother's latest scanner does a decent job of ploughing through and digitising all those random pieces of paper, big and small. It is a great addition to Brother's portfolio and has a good feature set that matches many of its more expensive competitors.