It was purchased over the phone by an anonymous bidder in an auction in England. As the AP reports,
The letter, on White Star Line notepaper, was tucked inside the pocket of a sheepskin coat Benjamin Hart gave Esther as he put his wife and daughter in a lifeboat. The family had been traveling from England to Canada, where they planned to settle.
Esther and her daughter Eva survived the disaster, but her husband did not. The letter, in its entirety, can be read here. The most tragic part might be seven-year-old daughter Eva Hart's post-script of "heaps of kisses and love to all," but is this relic worth $200,000?