There are some articles online how to detect a copy from the real. The original is a SkyRC product so a shop selling SkyRC products should provide you the real deal. Nevertheless even the original B6 does know bad stories about tolerances in the balancer. I know with 1S no balancer is needed butin the future you probably will be.

If you can do some solderwork maybe it is an idea to get cheap USB charger boards:
http://www.ebay.com/itm/A61-TP4056-1...item5417ea9604
With adding a simple 5v powersupply you can make a multy charge system for 1S batteries.