Don,
Our medical grade stuff was more expensive than I would care to spend for outfitting a small business or home computer system. Our connectivity or interface is USB however. You might find what you are looking for in the $75-150 range.
I found the ebay related site shopping.com easy to filter for different scanner features. They might have something that does the MStag.
usb barcode scanner - QR Code - USB - Barcode Scanners - Shopping.com