Here's what consumers have asked with answers from Jiji.ng staff and previous consumers.
This site is froght with fraudsters. I believe the site even has it's employees or cohorts pose as buyers making fake offers to sellers to encourage sellers. I tried selling on that site before, and after you agree on a price offer from a "buyer" they simply disappear. Maybe, I was supposed to send the items before they pay. I experienced this numerous times and realised that the promises made to me by a Jiji staff to buy their VIP ad to improve my sales was simply a con job. When I complained about this to Jiji customer service all I heard was "crickets." Stay away from this site.