Ballast is not that hard to change, you should be able to find it anywhere using Google.
Here's one on ebay for 100 dollars.
http://cgi.ebay.com/ebaymotors/OEM-HID-XEN...emZ370203404593
You live in the bay? I live in Modesto, CA just buy it, cruise your lexus on down here and I can help you with it....Unless, the shop isn't going to charge
you more than the gas you would waste! :)