It's probably too late already this season to snatch these bargains up, but I was able to grab this particular set of Lemax Christmas Village trees for about $6.00 USD after the holidays (normally $14.95 USD).
(And when I went back to get more, they had sold out...)
The 21-tree set that I found includes two 9" trees, three 5½" trees, six 3 3/4" trees, and ten 2½" trees. The "trees" are basically brushes that have been trimmed to shape; some have their bristles a bit bent, but most are straight. The bases are hollow white plastic.
The trees work well with 28mm scale figures...
...and do a good job of breaking up the battlefield, providing lots of cover and places to hide.
The smaller trees also work well with 15mm scale figures.
28mm figures from the Santa Claws Gang range at Amazon Miniatures. 15mm figures from the AK47 range at Peter Pig.