What are your thoughts about the "What is your best price?" question on an item that already has a price listed. Say you have a coin listed for $100 (on eBay or a forum) and someone asks what is your best price. How do you reply? Do you quote a slightly lower price? Do you ask the person to make their own offer? Do you just ignore the question? Does your answer change depending how much room you have (or how motivated you are to sell)? If your price is firm, do you reinforce that and write something like "price is firm" in the listing?