The tip-in process is not new. It has been used for decades by high-end publishers such as Franklin Mint and the Easton Press. Contemporary publishers of limited editions such as Dennis McMillan Publications, B.E. Trice and Vascic continue to use this process in the production of their books.
Recently, another publisher was able to create books signed by the late president Richard Nixon when a cache of signed pages was secured from Easton Press. We have discovered signed copies of books released after an author's passing. Most notably, some by Stuart Kaminsky, Donald Westlakeand Robert B. Parker.
One could argue that because of the extremely small availability of these books that they would command a higher price.