Everyone has stuff with them, that they no longer need that much. It'd be quite convenient to get rid of them, and get some money too! And needless to say, find old second hand stuff, at a negotiable price. That's exactly what Buy Sell is for.
As a wide number of students use the app daily, once you put something for sale, in a matter of hours, your potential buyers will contact you.
On the homepage, you see items put for sale in chronological order. You can filter the items by electronics, books and miscellaneous. You can also search what you are looking for.
Buy Sell also lets you request for things you need so that someone with the required item, who wishes to sell it can directly contact you, if you are interested in buying it. It just makes the whole process faster and more direct.