We assume that such a big distinction is probably linked to The point that knowledgeable designer knows how to produce a marketable book cover that appeals to your target market. Type of book cover design. Illustrated covers or covers according to the first pictures are costlier than stock photo-manipulated kinds. https://thesocialroi.com/story8248336/the-smart-trick-of-book-cover-illustrators-that-nobody-is-discussing