Good deal. Glad to hear it.
There's really nothing weird, you just need to make sure the charger supplies at least 850 ma. More is fine. My car charger can supply up to 1200 ma (1.2 a) and works fine. The phone will only pull what it needs, but it needs 850 ma.
Just as an update - The person I purchased these from on eBay was very legit. Quick shipping and the product appears to be the real deal. Very satified with my purchase.
Item number = 290476476567
Seller = pure1966!