Ending today, Eddie Bauer offers its Eddie Bauer Women's Lookout Colorblock Quarter Zip Pullover in Sky, Sugar Plum, or White for $19.99. Apply coupon code "TOPAZ" to bag free shipping. That's $30 off list and the lowest total price we could find. It's available in regular and petite sizes XS to XL, although not in all size/color combinations.
It's also available in tall sizes M to XXL for $24.99 with free shipping via the above coupon.