well I stumbled onto this site: www.smartbargains.com and they have a king sized down comforter with 29 oz of 550 fp down. I realize that this isn't the best rated down, but 29 oz of it for.......*insert drumroll*..........$39 (shipped)

here is the link to the specific product: CLICK HERE

They also have other products that are super cheap and offer higher rated down, but I couldn't pass up the $39