Junglee.
What this site does is collects best deals from various famous shopping sites and shows it to you in a collection form.
I my opinion this is a "Time saver site", this is just because other than searching in various sites for best deal, you could simply go to Junglee, compare, get that deal in just seconds!
What you can also do is sell your products!
I myself use the site and say it is the best deal dealer to find your deal:)