Black & Decker BDPR400 Pivoting Rapid Roller for $16.99 shipped.   It is sold by Black & Decker through eBay. Here is a screenshot for your reference.  It paints two times faster than a traditional paint roller with tray and features a roller handle for storing up to 22 ounces of paint, three-angle settings, and includes 9" perforated roller cover, paint can lid, fill tube, and spatter shield.  Most places have it for about $29.