Here in the UK, a genuine dji battery retails at £125, the 3rd party ones on ebay from china are around the £65 mark, less than half the retail dji price. I was very tempted, yet the fact that dji locked out the older ones swayed me from buying one, even though I run litchi sometimes which would allow it to fly. I did however manage to find a genuine one for £83 delivered from a dealer in france, so I've gone for that. £23 difference is not worth the gamble to me, however if I'd not found one less than say £100 it'd have been a different story. I don't mind paying a bit extra for the proper thing, but I also don't like having my pants pulled down so to speak...