Hey I chime in here since I've done a lot of homework and will do my own write-up on this shortly.
It's not worth the Vertex Auto price. If you submit an offer they will take $200.
Now as for the cheaper HID kit I think(don't know for sure) that CQ Lights sell the same kit or at least ballast.
http://www.cqlight.ca/
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-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house