I'm looking to purchase the $150 premium membership. I just had a question regarding cost of grading and what you guys average with it. With the discount of 10% and a $20 grading fee making it $18 after discount. Will I have any other fees added on to the final evaluation of grading the books if I only send them in for the grade and slab? I wont be doing a pressing or cleaning or anything just the grading. If it's $18 a book and I do 10 books should it be $180 plus the invoice of $5 and the shipping fee? Ideally i'd like to use the credit immediately with the books ive been selling and I've been reading on the forums that a lot of people like to send it 5+ books at a time usually.