Well if there were 4500 registered bidders, there could have been close to 6000 people. I imagine there were a lot of people that went just to kick the tires. Don't really matter how many people, but a lot of these sales goes to show how little your equipment is really worth. My brother in law works in a bank that deals mainly in agriculture, and he always said that farmers machinery is worth less then what they value it at. He mentioned that when they borrow money, they use 60% of what you say its worth as a tool for them to figure out the payments, etc.