The gift of Magi and Other stries

I read "The Gift of the Magi and Other stories" written by O. Henry.
This book has 5 stories. I read all of these stories, then I interested in "The Gift of the Magi".This story is Christmas story.This story's character are Mr. and Mrs. James. They are no rich, but they are happy.Mr. James has a gold watch, and his wife has long beautiful hair.Mrs. James think she give her husband chain of gold watch.She sell her hair at 20 cent. Then she buy chain by that money.On the Christmas day, she gave her husband the chain but he was sad, because she doesn't have long hair. He bought two expensive comb from money of sold watch.I think this story tought me important thing is heart, and not money or gift.