Cool idea, but your sample (https://www.papersync.co/static/PaperSync_sample.pdf) isn't really selling it. The resolution is a lot lower than I would expect and there are JPEG artefacts all over the place. If the sample really is representative, I suggest looking into improving the output quality. I doubt you built a "fast, hi-res, scanning setup that uses DSLR’s and some other neat hardware & software" just so you could deliver low-res over-compressed PDFs.