skeetersmom I just posted about polyester batting I use This is the link to their site http://www.okleequilting.com/store/
They will send you samples I believe. I either get the Cheep batting and double it or I use the 6 or 8 Oz (I think)
I buy a roll and partner with a friend because a whole roll will take up a space oh I would say 42 to 48 inches I would think so you need a place to store it!! LOL