Because not all items sell daily. I have a few items up for sale that sell maybe 3-4 a month. And from time to time I clean out bags, especially one of a kind items and dump them on the market just to get rid of them. But that probably only accounts for 5-10% of the total market. If Uber Chain of Whipping is selling for 50K and sells 10 a day, I am not going to lowball it.