Rude buyer towards sales person - seeing the other side

When a commissioned sales person is trying to sell something, it is an adversarial process. No if ands or buts about it.
If you are in commission sales DO NOT come on here and cry about getting your feelings hurt or being "beat up" by a customer.
As the professional, you know what your bottom line is,when you get there stop negotiating stand up shake your prospects hand and wish him a good day!