Various self-contradictory titles, unless deliberately ironic, make me cringe. For example:
Frank Herbert: Unpublished Stories ... ah, so if the stories are unpublished, what exactly am I buying?
This next is mostly just the unfortunate way the book is listed on the website (in this case Kobo) rather than of the title itself, but still...
The River of Silver: Tales from the Daevabad Trilogy (The Daevabad Trilogy, Book 4) (P.S. I did enjoy the trilogy, which is how I came to notice the "trilogy" had grown a fourth book.)