Unfortunately it is not that simple. That is some shady marketing and misleading wording they are using to make you think their blue tinted filament bulb is HID. It is designed to give you the HID "look", and it doesn't even do that very well.
Just save up a bit and get an HID kit from DDM if you really want HID. They are only about $25 dollars for a pair. So buy one set, keep the other as a spare or sell it on here to recoup some money out of it.[up]