Quickr is a very famous site for buying and selling the things. you can buy the second hand things that other people dont need because they want to sell the items they dont need so its a good idea to shop but honestly I dont think its the best because even I tried to sell my dress here on quickr . I got calls and messages from many people for the dress but only till 2 days from when I posted the add then I found out that the reason behind this is that as the days keep on passing by , more and more people are posting more and more adds due to which your product keeps on the going down in the list and gradually becomes least important to the people. this is the biggest drawback and secondly I feel that its not safe to use it as well because the people who got your number through the adds can also misuse it or can call you or message you without any reason so even your contact is not safe on such sites, I have faced it actually , when I posted my dress on the site, till few days after this , I got some fake calls and also some guys tried to watsapp me whom I blocked later on but basically I want to warn the people , the girls especially before using this site.