Just installed Maverick and my Canon MP780 will print but no longer scan, would a new driver help?
There are four options at present and being told you can't have the new thing without paying for an old thing to work means many people will resent the $40 option and be angry:


Pay the money and keep running Mavericks with VueScan to scan.
Don't pay the money and revert to Mountain Lion (or whatever previous OS works with your peripherals).
Get a new scanner.
Wait for someone else to provide a driver that either does more than VueScan or costs less than VueScan.