While we are talking about the best price and the lowest price I think that it is essential to mention that fact, that it is highly important to make your customer understand that your price is the best price. What I try to say is that you must never start your conversation with the customer about the price. The first and the most important thing you should start talking about is the product you offer. You should show all the advantages of YOUR product for the certain client, compare it with products offered on the market and e.t.c. and only then you should talk about the price. When customer have good aknowledgement of your production, when he understands that it  will be a benefit for him and his business the "price question" will not be that important for him (I am talking about reasonable prices of course) even if it seems a bit higher then the others. So my opinion is - we are not selling the price but we are selling our product  and our company (here I mean the top job of the managers, marketing and other specialists).

agreed

i think there is no use to think lowest price or best price, you offer your price and sample, if the customers can accept, then you can conduct the business.