MelodySusie Direct via Amazon offers the MelodySusie Derma Roller for $11.99. Coupon code "OCNRRELJ" cuts the price to $9.99. Plus, Prime members bag free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds $5.48.) That's $3 below the lowest total price we could find for a similar item elsewhere. It purports to reduce the appearance of cellulite, stretch marks, and scars. It's available in sizes 0.25mm to 2.5mm.