I'm making a general comment and not trying to single anyone out. On the other hand, if the shoe fits wear it.
Pickers are not concerned about credibility. Money, money, money and more money is what they are after.
Where as, we as collectors plan on being in this for the long haul and even through our sales we develop and promote relationships based on trust and confidence. When we express prices to each other we want to sell quickly and fairly based on knowledge rather then greed. I think, when you have to drop prices on a regular bases and drastically; it shows that you are admitting that you overpriced the item and lacked the knowledge to set a fair price point. This doesn't portray sellers in a positive light. But, rather reveals them as being greedy and out of touch with their buyers and the hobby in general.