1.Aries carries the most thorough range of hid kits available worldwide. 2. $15-45/kit. Based on volume/kit type/quality ... Kelvin (K) that indicates the hue of the light source.available color temperatures include: 3k, 5k, 6k, 8k,10k, 15k, pink ... , purple,green AVAILABLE BULBS SIZESH1, H3, H4 (Low HID/High halogen),H4 Bixenon ...