Autodesk SketchBook Pro 2011 for $29.99 shipped.  Here is a screenshot for your reference.  This is a drawing and painting application designed to provides professional-grade capabilities for artists, designers, and doodlers, works on standard images formats, including TIF, BMP, JPG, PNG, and PSD, and features customizable digital pencils, pens, brushes, markers, and airbrushes.  It usually goes [...]