Big red dot on the bottom of the Blood Magick book

I bought this and "Shadow Spell" from the seller. The books arrived later than promised and there is a big red dot (size of a dime) on the bottom of each of the books, across many pages. In some book stores the red dot means the book is either damaged or on sale. I wanted to give the three books as a gift to someone, but now I can't :(

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