Christmas trees normally go on sale during the later part of September and early October. Christmas items are known to go on sale before Halloween and Thanksgiving.
This white Christmas tree is on sale for $369 http://www.christmaslightsetc.com/p/7.5%27-Jack-Pine-White-Tree-White-Artificial-Christmas-Trees--20714--191.htm
Online buying options for artificial Christmas trees are more plentiful than before. Sites like Wayfair, Amazon, Tree Classics, and Lowe's all have these items in stock during the holiday season.
Christmas trees sales are so that people can buy cheap Christmas trees in the run-up to Christmas day. The trees sold in these sales are often cheaper than what you might find in your average shop.
Garden centres can be a great place to go and find Christmas trees on sale. They come in various sizes, so you can get them big or even small to suit the space that you have for one in your home.
I searched online for this and it seems that they can cost from $120-1500. This seems a bit expensive, but there is a artificial tree sale with free shipping at treetopia.com. I think it depends on how tall you want it. If you want a 7.5 ft. tree, then around $500 is the price you would have to pay.
The internet would be the best place to buy an aluminum Christmas tree. Stores such as Sears or The Bay might carry these types of trees during the holiday season if there is a demand.
Post-Christmas Sale
Decorative Christmas pillows can be found at Amazon or eBay. Overstock has a selection of Christmas decor including pillows currently on sale as well.
You can find small live Christmas trees for purchase at local nurseries, garden centers, or Christmas tree farms. Additionally, many home improvement stores and online retailers also offer small live Christmas trees for sale during the holiday season.
Target is a great place to find cheap white Christmas decorations. www.christmas-trees-wreaths-decorations.com also has a wonderful selection of white christmas decorations to buy online.
You can find small natural Christmas trees for sale at local tree farms, nurseries, garden centers, or home improvement stores. You can also check online retailers or local classified ads for options.