I don't like it either, but I think in threads like this people have a tendency to exaggerate it. In my opinion, the prices have been remarkably stable given the amount of livestock they are going through. I can usually estimate the price fairly well, and the price is usually the same whether I show up in a suit or cut-offs. (some would say because they know me, and there may be something there). If you only have 5 fish for sale, it's a lot easier to have consistent prices from day to day, etc. These guys go through so much, they can't mark them or be perfectly consistent.
Yes, it happens, but not to the extent you would think by reading this thread.
And if anyone is thinking Roozen's is the only place whose prices fluctuate to some extent based on people's moods, time of day, the weather, etc...that is nonsense.