When you're negotiating with a freight broker about a load, here's a quick trick to get more money. Give this a try — when I worked for NTG (Nolan Transportation Group), they had us do this to carriers to get prices lower on loads. The idea came from a study at Harvard University.
Don't rebuttal the broker by negotiating in round increments of $25, $50, $75, etc. Rebuttal with "extremely" odd numbers — weird numbers that catch them off guard. If they offer $1,000, counter with $1,037 or $1,072, and the broker will be more inclined to just say "Ok, I'll shoot you the Rate Confirmation, what's your email?"
What you're doing is catching them off guard with the random number. Brokers often need to move 50+ loads a day, and they're more inclined not to go back and forth with you. If you catch them off guard, they're likely to just give you your named price. Give it a shot.