I had an old point and shoot camera, that I purhcased for 9500 a year and a half ago, and I wanted to sell it and collect money to purchase a new dslr. So I just went to the playstore and grabbed 2 apps, olx and quickr.
Then signed in on the apps and posted the ads for the camera, same price, description and photos on both apps. As soon as my ad was posted, within 15 minutes, I got a message from a user on olx, to make a deal for the camera. As an hour passed, I got 3 more texts on olx. And at last, at night, I got in total 11 texts from different olx users, and I managed to sell for one user at a fair rate. On the other hand, no messages from quikr.
On the next day, I met up with the buyer, and he checked my camera, and gave in cash all the money. Thats why I would give a 5 star for olx, because it was easy to use.