I’m currently reading "The science of story telling" by Will Storr. There are 5 blurbs on the cover, one on the back cover. The book open with 3 full pages containing 18 blurbs.
That’s completely ridiculous. It really deserves the book. It makes it look silly and unconfident.
For French book, it is quite rare. When it happens, it’s a red paper above the cover that you can remove after buying the book.
Is that an American thing?