HID kits

Can anyone tell me if this is anygood??

http://www.ebay.co.uk/itm/XENON-HID-CONVERSION-KIT-H7-12000K-35W-SLIM-BALLAST-And-Bulbs-UK-Royalmail-1st-/120872399744?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item1c248e7380#ht_3353wt_1083

if not can someone recommend me a kit, im not sure what to get 8000k, 12000k etc

thanks
lee