FYI:
I decided to give this a try. The ADF really works well, you can scan hundreds of cards in less than a minute, front and back into a file of choice. For now, I think I will scan only extras or inexpensive cards until I get used to the scanner, but I have not detected any damage, creasing, marking etc. to date. Any expensive cards, etc. I feel safer using a flatbed like my EPSON V370.
Kronocard is a very interesting product. Not only can you scan to categorize [super nice feature], but you can sell directly from your Kronocard Online Store if you wish. They also have an "eBay Connector that allows you to scan right to eBay. They are relatively new but the features are really user friendly, and so far inexpensive to use. The big cost would be the ADF scanner but you can still use the program with a flatbed.
I haven't done much yet, so I'm not awarding ***** stars but it is pretty neat.
~BOB~