A fair price is whatever a seller and a buyer agree upon, not the rock bottom value that you get when applying sustained pressure to a price point, collectively. You may get a product cheaper and cheaper but probably at the cost of the stability of the seller, which is also of value to a buyer. You may find that if you pay more you are more valued and a seller will do more for you in the future. Or you may be the last to close an important target of a sales person and get a below market price, at least for a while. What's fair? IDK. Just keep thinking and occasionally reopen negotiations in a respectful way if you think you can get more for less. Or switch to another product.