When a salesman tries to sell someone something, the salesman may have to offer a bid - the price for what they are selling. With expensive items or complex projects, such as construction, the bid must be very carefully prepared so that the salesman's company can make a profit, but the price is low enough for the buyer to accept.
In this case, the text refers to a product that is so desirable that the salesman would not have to prepare such a bid - he/she could ask just about any price and it would be accepted.