Macy's offers the Martha Stewart Collection 10-Piece Glass Mixing Bowl Set for $39.99. Coupon code "FRIEND" cuts it to $27.99. Pad your order with a beauty item (they start at $2.55 after the coupon) to bag free shipping; otherwise, shipping adds $10.95. That's $30 off list and the lowest price we could find. This set includes 4.5-, 2.9-, 2-, and 1.2-quart bowls, as well as 21-, 12-, 7.5-, 5-, 2.7-, and 1.24-oz. bowls. Deal ends December 11.