It all works anymore, but it's not officially supported by Sony but maybe you can still use it with your own ebooks.
Sony Reader - PRS-505, 6-inch eBook Reader / eReader, Silver, NEW BATTERY!
Sony Reader PRS-T2 6" Touchscreen E-Reader - Spares/Repair
Sony Reader PRS-T2 6" E Ink Touchscreen E-Reader WiFi 2GB
Sony Reader - PRS-600 6-inch Touchscreen eReader, Silver, with new battery!
Sony Reader PRS-T2 6" eReader - RED - Only Used A Handful Of Times
Sony Reader - PRS-300 5-inch eBook Reader eReader, Bundle, pouch+books, charger
