Venus offers its Venus Women's Ribbed Sweater for $27.99. Coupon code "XWEB17F9012" drops it to $23.79. With $4.95 for shipping, that's $12 off list and the lowest price we could find. It's available in select sizes from XS to 3X.

Update: It's now $26.99 before the above coupon, $22.94 after.