Nicola Solomon of The Society of Authors wrote an open letter on the subject of the special sale, which can be seen in The Bookseller:
Please reassure authors by taking seven simple steps to ensure that special sales do not damage authors’ overall earnings or the market for full-price sales.
What are we talking about? This is not about ordinary high discounts, such as those demanded by Amazon (although those cause concern to authors and booksellers), but about sales where the purchaser pays a very low price per copy for a large quantity of copies, paying up-front and “firm” for all those copies. …”
To read more, see here.