The twelve days of Christmas are a traditional Christmas carol that tells the story of a wealthy person receiving a series of increasingly lavish gifts over the twelve days leading up to Christmas. The gifts in the song include things like partridges in pear trees, lords a-leaping, and maids a-milking. However, the actual cost of these gifts can vary widely depending on the specific items and how you choose to interpret the lyrics. In general, the cost of the twelve days of Christmas can range from a few hundred dollars to several thousand, depending on the scale of the gifts.