Sellers do not have ratings, but you are not charged for the item until you accept it, which you do online when it arrives. If it never arrives, you don’t pay. You can rate a seller at that point and offer comments, but I don’t think the ratings are available to buyer. Poshers are very good about shipping promptly (unlike etsy sellers, for instance), and Posh has some deal with USPS that their packages arrive in two days.