Giving the gift of words is back in style as online booksellers offer the ability to gift an ebook. (goodereader.com)
However, if you plan to sell your book with online booksellers, in bookstores, or put it in libraries, then it is advisable to purchase a number. (gorhamprinting.com)
But, if inspiration fails, all the major online booksellers offer gift cards, too. (goodereader.com)