I used to think this way, but in the end you're only hurting yourself by limiting the universe of contracts you're bidding on. There was one broker that made some unnecessary comments about my offer, but she still presented it and the seller didn't want to negotiate. A month or so later, another contract popped up on the same site, and I made the same lowball offer and it was accepted! I agree that the brokers could be less snippy about these kinds of things, but at the end of the day I'm not trying to be their friend or anything, I'm just trying to get a good deal. If they want to be petty, no harm/no foul and move on to the next contract. As long as they're presenting offers and administering the process in the correct way, then I'm happy. That to me is more important than a broker's bad e-mail etiquette (although I'd be lying if I said it wouldn't annoy me).