HDTV sales have increased 52% in unit volume and 39% in dollar volume in Q1-Q3 2006 compared to the same time period in 2005. Sales of HDTVs during the 2005 holiday season (November and December) topped $2.2 bln with over 1.4 mln units sold and are expected to continue to grow in 2006, NPD Group says. The average price of an HDTV set is down more than 8% year-to-date (January through September) compared to the same time in 2005. Prices for LCD and plasma TVs dropped significantly from the 2004 holiday season to the 2005 holiday season with 35% and 41% declines, respectively.