Is no news that online trade in Nigeria is still under experimental stage if I want to rate it's performance. Don't get me wrong because I am taking out of experience.
Last week I decided to try online transactions with konga online marketing and the result was on the opposite. I actually ordered for an mobile phone car charger with 5v 2amp but got 5v 1amp. 5v 1amp is less than #500 in the market but I paid 2150naira for this same charger.
For me I don't think konga online trade is worth it when it comes to online transactions.

That's not sold by Konga, it's sold by someone on Konga..
You can sell your products on Konga.
If you buy a product for #500 but decide to sell for #600 on Konga, for listing your product, there's a commission you pay.. So what you do is to add to price since you want to make profit.
Same goes for the charger.