MULTI-BUY deal 3 x 9cm pots for $12.  The crinkly leaves have a dark purple under-surface and the flower panicles are pink.  It prefers a shady position and can reach 1.5mx1.5m.  It is a plant that will cope with dry shade, often a spot that is difficult to find plants for.  Responds well to being trimmed back in spring to help maintain its shape.  It is frost tender.  Selecting this option gives your 3 plants for $12.