i bought mine from seller hqz4321 on ebay.
make sure you specify 9006 bulbs and what temp you want. (4300k or 6000K are best IMO)
while you're at it get yellow DRLs! (9005) i get mine from seller timereaction on ebay. he's very trustworthy and will ship fast.
example:
eBay Motors: Nokya Head Light Bulbs Fog H11 Hyper Yellow 2500K S1 (item 250368650859 end time Feb-11-09 18:54:30 PST)