As a side-note to my comment, there are some industries in which it is normal and expected to negotiate. I prefer to err on the side of caution, but would not think it inappropriate if the vendor truly “offers” the original price with the expectation that it will be subject to negotiation resulting in another, “final” price. Such as a house being offered for sale, in which the seller is expecting that potential buyers may offer a bid a few thousand lower than the “asking price”.
And with that, it is way past my bedtime :). Goodnight, CR.