Need cheap mylar.

Anyone know of a place I can get rather cheap mylar? cheaper then HTGsupply.com... they have a very good price, but when it comes to shipping its like 14 bucks for the mylar I need but then 12 bucks just for shipping! anyone know of a place where shipping might be free for mylar by chance? haha

go to like a sporting goods store in the camping section and get the emergency blankets. they are like under 3 bucks for a pretty big sheet.

can emergency blankets be cut up and glued to poster board? xD

I'm pretty sure they could, someone in another thread suggested the shiny wrapping paper posted a pic of his set up and it seemed to work.