In past years, Turbine has put a number of items on sale between now and the end of the year. These are separate from the normal Thursday-Thursday weekly sales.
Last year, for example, expansion packs were available for 75% off for cash in the LOTRO Market web store for a limited time. Some items that are not often discounted (premium wallet upgrade, war-steed colour packs) were on sale for Turbine Points in the in-game store just for particular weekends in December. Sometimes they are announced in email if you agreed to get promotional offers, others are announced by posts on the LOTRO forums.
If you think you might want to pick up some bargains for cash or TP, keep an eye out for the next few weeks.