Garden Centre Group said sales were up 7%. It charged £50 for a 1.8m Nordmann in 2009. The Tillington Group charged a similar amount.
BCTGA secretary Roger Hay said 150,000 more Christmas trees had sold in 2009, partly because of decreased supply from Denmark, where growers were hit by exchange rate problems.
He added: "Nearly everyone has sold more trees at the same price, or at an increased price."
He predicted that 2010 would not bring any more price rises: "We've probably had as much as we will have. But there is no reason at this stage to expect any fall in the demand. Last year was probably the most difficult in terms of terms of supply and from here on in it's going to get better."
He said more mature trees would be available in 2010.
Hay appeared on TV more than ever before in 2009, including on BBC Countryfile, BBC news and an ITV special on Christmas trees.
Subscribe to Horticulture Week for more news, more in-depth features and more technical and market info.