It looks like there are heaps of fakes online, just google image search "Philips HID"
The box is almost a dead giveaway I think, you'd at least assume they would come in either of these boxes
http://ecx.images-amazon.com/images/I/81epjoSUSTL._SY355_.jpg
http://img.diytrade.com/cdimg/969044/9865039/0/1248664110/Philips_HID_Xenon_Kit.jpg
But hey that's just my opinion, hope you haven't been ripped off!
edit; http://factoryxenon.com/shop/2x-philips-d2s-35w-85122-xenon-headlight-hid-bulbs-head-light-bulb-lamp-new-oem-5/ - are they these?