As Aussie Quilter and jitkaau said between $20 & $30 here in Australia. I don't pay that much as I give my quilts away.I have bought a lot of fabric from the States and it averages out to $8 per yard. That includes postage.
I do check out Spotlight sales and have picked up some bargains at time. I prefer to buy from U.S.A though as there is a wider range of kids fabric to be had. As most of my quilts go to kids charity I like to use bright prints. In fact the brighter the better.