Teenage Mutant Ninja Turtles #18 CGC NM+ 9.6 Nirvana Variant Retailer Incentive. All uncertified books are graded to current market standards, taking into account what we know of CGC grading and Overstreet's Grading Standards. Our graders have over 20 years of grading experience each. We do occassionally miss a defect on a book.This item is in the category "Collectibles\Comic Books & Memorabilia\Comics\Comics & Graphic Novels". The seller is "qualitycomix" and is located in this country: US. This item can be shipped to United States, Canada.