Where can I find the best iphone 5s/5c chargers for a low price?

I want to buy them wholesale but a good Quality. I tested out some I just got and they were terrible.

Craigslist

Can i recommend this:
Description
- Capacity: 5600mAh
- Battery Type: Li-ion battery
- Input: Micro USB 5V 1A
- Output: USB 5V 1A
- Size: 4.25 x 1.89 x 0.79 inches; Weight: 4.46 ounce
- Product Warranty: One Year
- Charging time: about 6.5 hours
- Battery Level Indicator: 3 LED indicator lights

Charge the Power bank:
- Full Charging by 5V 1A Adapter need 6.5 hours
- Charger is not included, can be charged using your own phones or tablet charger

I have bought one, and it still uses well.

here is the rink:
http://www.amazon.com/...00FDJGMIM/

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