Whitinsville's Troop 155 has set up shop in the parking lot of the Whitin Community Center on Hill Street, selling Christmas trees. The trees range in price from $10 to $60, depending on size. Scouts and leaders will be selling the trees on Saturdays from 9 a.m. to 6 p.m., Sundays from noon to 6 p.m., and Monday through Friday from 4 to 8 p.m. until Dec. 18.