Mary Jo's sells Fairy Frost for $7.09 a yard every day.
Start at:
http://maryjos.com/fabrics
follow this path: Quilting > By SubCategory > Fairy Frosts >
they take off 20% if you buy the whole bolt of anything. (you might need to order by phone to ensure you get the discount.)
they have more colors in the store than on the website. if you need something you don't see, call them and they'll help you get it. :-)