Thanks for posting this.
But the question is: Will it do what any average person would need? Will it charge an iPad and a phone at the same time? If so, then whatever it might be worth $4.
It might do what you ask, just very slowly. Or it might not do any of those, apple devices are funny about chargers.
Regardless, it's probably not safe to do anything other than never buy it.
Could shoot it...
But then you'd still need to waste four pounds to get it in the first place. Keep your change and use it for something like seed for the birds.