Try Kohl's. They always have good sales. Looking on the website just now, I found
this, which comes in white (ivory) and costs $51.99 (full), $58.49 (queen) or $64.99 (king). They have much more of a selection at the store than they do on the website.
I also found
this for 59.99 at Bed, Bath, and Beyond.
(Second link is now fixed.)