Fujitsu ScanSnap S1500 Sheet-Fed Duplex Scanner for $389.99 shipped.  Here is a screenshot for your reference. Alternatively, it is available at Newegg for $389.99 shipped. This scanner scans at 20ppm in monochrome and color at 600 x 600 dpi, creates searchable PDF and features a 50-page Automatic Document Feeder.  Most places have it for about $419 or more.