This is the cheapest product you can buy in its area. The service is free and VERY VERY fast. But why is it cheap?
It is poorly manufactured(as it is cheap). So some people will get more for what they pay for and the rest will not be pleased.
The wiring material gets (kinks) in it. So if you bend it, certain parts will stay like that or snap. The female sockets are unpredictable- They can work in both, they can work only in one or they don't work at all.
So just be careful. This IS LIKE A GAMBLE!