The blessings are listed on a parchment document and are available for special occasions such as weddings, anniversaries, baptisms, first Communions and ordinations.
The Vatican does not sell the blessings. To make them accessible, the Vatican has entrusted their distribution and authentication to companies selling religious articles. The companies charge a moderate fee to meet the expenses incurred in producing and mailing the parchment.
For decades, these parchments could be purchased in religious-articles stores in the Vatican. Now they can also be obtained through Internet. San Michele Arcangelo (http://www.sanmichelearcangelo.com) is one of the first companies to offer this service.