Delivered free and fast, which is always a great place to start!
This wireless set looks the part and installed more easily than any of the wireless combinations that I've purchased in the past. Once the software was installed and the system rebooted, the keyboard and mouse auto installed and worked 100% from the word go. The keyboard is quiet and although it does not provide particularly good feedback, allows me to type quickly and accurately with none of the "missing characters" that have affected other wireless keyboards I have used. The range of short cut keys is more than adequate and keys are clearly marked. The mouse is smooth and accurate with no obvious caret creep encountered with many wireless optical mice. The buttons are invisible - they are in the usual place, but concealed beneath the casing, but operate perfectly well and allow quick and accurate use. The wheel also provides the usual middle button feature. It works well enough although I do find the wheel a little stiff - it will probably loosen up with use.
AA cells are provided for the keyboard and the mouse. I have no idea of what battery life to expect, but 2 AA cells won't break the bank.
All in all, a good value for money item. I'm very pleased with it and would recommend it to anybody.