I know it's more than $100, but at $199 this week at Staples, the Brother MFC-6490CW is a steal. 11x17 flatbad scanner, printer, FAX with ADF (document feeder). I picked on up this past weekend on sale and it was a no-brainer. It does just about everything but make coffee, it's networked, so you can print to it from any networked computer in the house and the ink is economical, relative to the big boys. I've been a skeptic about Brother til now. Our local hospital uses Brother printers/scanners too.
I loaded up a stack of documents in the ADF hopper, opened OmniPage and in 3 minutes, it scanned, converted to text and saved a Word doc of a 19-page film script.
Having 4 in 1, it saves electricity, because only one power supply is used, and one connection to the PC or network. One of the most useful office gadgets I've every owned.