The firm price of a product is the absolute maximum cost that the seller is willing to pay for a product (based on the quantity of the product, the price, and the terms of the sale).
The firm price is the price that you pay when you buy something, not the price that you pay when you sell something. It’s the price that you pay when you buy something that you sell.
The firm price is the price that you pay at the end of a sale, not the final price. It refers to the final price that the seller has to pay after a sale is completed. It is also referred to as the “full price.
In some cases the firm price refers to the lowest price that the seller has to pay. In other cases, it refers to the lowest price that the buyer has to pay. In a sale, the seller must pay the firm price. In a purchase, the buyer must pay the full price.
You can never sell a product for less than the price that you pay. It is perfectly legitimate to get a new product in the first place. But if you want to sell it for even a fraction of the price that you paid, you have to pay a lot more. So, for example, when selling to one of the top players at a particular time, you could get a good price for that product in the first place.
This is why, in a sale, it is never a good idea to tell the seller how much you paid for something. It will just make them think you were being stingy. But in a purchase, you can tell the seller the price you paid for the product. And if they are not happy with that, they can sue you for fraud.
It is also why you should never tell someone how much you paid for something that they have bought. Unless you are the person who bought it and they are the person who got the product. Then you can tell them you paid more than the seller because you paid more than the seller and they are still unhappy with that. This is why you should never, ever, ever tell a seller how much you paid for a product that you paid the seller.