(San Antonio, TX) -- It's going to cost more to deck the halls this year. The average price for a real Christmas tree is up ten-percent. Fred Raley of the Texas A&M Forest Service says, on top of supply, there is also a higher cost this year for shipping. As a result, folks are dropping between 80-and-100-dollars on average. But, even though prices are rising, a tree is a must. An estimated 21-million real Christmas trees will be sold by the time Santa arrives.