TomTop offers this Stainless Steel Gravity Hook for $16.99. Coupon code "LCXHOOK3" cuts the price to $13.99. With free shipping, that's $15 off list and the lowest price we could find.

Note: This item ships from China and may take four to six weeks to ship.

Update: The coupon no longer applies; however, the price has dropped to $13.99.