I think any product which is not sealed pack should not be rated 5/5.
Many a times people say opened for checking and such but still it is technically not sealed anymore.
If there are no scratches/smudges and the product is in pristine condition(used for 1-2 days and never used again) why should it not be rated at 5/5? It is brand new to say the least.
1 year old products should not be rated 5/5 but in my opinion, rarely used products can be rated like that.
I think they state in their post that they have used it for a few days.You see most people perceive that once opened a package is no longer new per se. Probably you are comfortable with people doing that and also buying a product but most people i believe aren't. At the most such people can rate less than 5 and state clearly it was used for couple of days and whatever else they want.
At the end it is psychological.
Opened but unused is a term that is abused a lot in the market. People claim their products have been unused for months, i understand there might be a few cases for which this is true but not all. (Just my opinion, feel free to disagree)
My dads desk has that perpetual motion pendulum thingy which has been there for quite sometime.
It looks the same as the day i first saw it ... maybe because it just sits there and noone notices it.
Still its out of box and "used" .. but it can be said 5/5 ... well some dust maybe there which can be polished off.
Maybe other things like this.
Looks like this.
http://image.shutterstock.com/displ...m-on-white-isolated-background-d-61740004.jpg
Just an exampleThe things that the members sell here are mostly mobile phones/laptops/tablets etc. These are items which are handled regularly and hence is not similar to the one which you posted above.