I received this Logitech mouse as a gift so I can't speak to the price, but I am very happy with the mouse. It is very easy to use and fits my hand nicely. I like the smaller size mouse because I often travel with it in my computer bag. I had never had a wireless mouse before, so I love that aspect of it. I've had it for quite some time and it is not showing any signs of wear. I've only had to replace the batteries once. I would buy another mouse just like this one when this one eventually wears out! Performance This mouse works very well for want I want it for. I do not play games on my computer, so I can't speak to that. Durability It could almost pass for new after many months of use. There are no parts of the mouse that are wearing out; everything on it still works perfectly. Design I love the sleek design. My previous mouse was bulky, so I really appreciate this one. Comfort It fits my hand perfectly, so it is very comfortable to use. I'm not sure if a person with a large hand would like this mouse; I have medium sized hands.