With orders of $25 or more, Amazon takes $3 off select CoverGirl makeup products via this clippable coupon, yielding deals starting at a 50 cent profit. Plus, Prime members bag free shipping. (Non-members can spend $35 to qualify for free shipping.) That leaves many of these items around $3 under the price you'd find at local retail stores.

A best bet is the CoverGirl Eye Enhancers 1 Kit Shadow 0.09-oz. Pan in Knock Out Pink 460 (pictured) for $2.50 $3.09. Clip the coupon, and add it to your order for a 50 cent profit 9 cents. Assuming you're spending $25, that's the best deal we could find by $3.

Note that these items are part of Amazon's "Add-on program" and can only be purchased with an order of $25 or more. The coupon is limited to one use per customer.