This is the price (excluding shipping and handling fees) a seller has provided at which the same item, or one that is nearly identical to it, is being offered for sale or has been offered for sale in the recent past. The price may be the seller's own price elsewhere or another seller's price. The "off" amount and percentage simply signifies the calculated difference between the seller-provided price for the item elsewhere and the seller's price on eBay. If you have any questions related to the pricing and/or discount offered in a particular listing, please contact the seller for that listing.
F or "Fine" is a nice solid copy. Usually appears at first glance to be very nice but upon closer inspection has a number of small defects. Expert grading. Nice complete trade paperback. NM and NM/M are no excuses, High grade, nearly perfect copies.