It's about $6.50 a can at Michales Craft Store....Item # 6909024
I used this stuff on my Si's Glass Foglights and it came out Great. 2 coats of Yellow and 2 coats of clear to resist chipping.
It withstands heat very well.
OR
Ebay!
http://search.ebay.com/search/search...rclo=&saprchi=