I frequently see requests by the sellers on the Buy-Sell forum discouraging potential buyers from saying the asking price is 'too expensive' or counter-quoting a lower offer price. On the other hand, there is seldom admonishment against others saying its a 'good price, up for you'.
Just as there is transparency regarding how many people are willing to pay more (each time the price goes up), there should be transparency regarding the number of people not willing to pay more. This is the true indication of the market strength.
This is seen also in stock market system. Besides knowing the current price and the bid price, there is also information on the NUMBER of people bidding higher and lower. This provides other bidders with information about how strong demand really is, and if they should simply wait for the (potentially weak) demand to peter out, and buy from the next available seller, or jump in with a higher bid.
We should not be biasing prices in the upward direction. Market should be neutral. Let the supply-demand factor be the only factor determining price. This is an open forum, so why should the rules (official or unofficial) benefit the sellers?