Perhaps you've been negotiating with the aim of improving your circumstances.  You're willing to risk what you have or where you are, in favor of hopefully getting something better.  If you find yourself willing to compromise, that could be the difference between sensing real progress and getting nowhere.  Yet, the idea of jeopardizing not getting any perceived positive result may tempt you to consider corrupt offers, which would entail going against your principles and accepting or overlooking dishonest practices.  Consider this points while contemplating your next move:

1) Is your tactic a survival strategy?  If you're willing to compromise your self-respect or beliefs, then its important to consider the reasoning and prospective consequences.  Do you have reason to feel threatened? You may not be compensated enough to sell yourself short or sell yourself out.  You may have new options.  After all, the other person may have something to hide.  If you have been asked to compromise your beliefs, then you may have reason to question the basis for the other person's position.  S/He may be 'upping the ante' as part of his own survival strategy.

2) Would you be better off avoiding the situation? Some individuals aren't intentionally cruel, but they may be unaware of the impact and effect of their words and behaviour.  The absense of unintentional cruelty doesn't negate the effect their behavior has.  If you don't have to negotiate with this individual or need not accept their terms, you may be better off taking a new route.

3) What can you learn from the other person's offer?  Only you can define what is reasonable in any negotiation.  Consider the power dynamic.  Bullies may be people who feel disempowered or insecure, and only feel superior when they take steps to walk over others.  Ask yourself what you can learn about the other person if you take the risk to decline their offer.  A hypocrite may express concern if you turn down his offer.  The issue worth noting is this person isn't concerned about you.  Rather, he may be concerned about the implications of not being taken seriously. 

4) Would it be advisable to let time pass?  You may feel like you could strengthen your position if you had more time to collect new information.  Whenever possible, its wiser to take more informed risks.  The pain or frustration, and foreseeable costs of prolonging an uncomfortable or unresolved situation, must be weighed against the potential benefits of fully present and empowered. At a later time, you may decide you're ready to take the risk or, decide its not in your interest and be more certain of your reasons why.

5)  Can you measure the limits of honesty?  Even with the best intentions, you may not grasp what compels people to stop "playing it straight."  Reality is the world is filled with hypocrisy, ulterior motives, lies and agendas.  People will 'bend the rules' because they feel they can get away with it.  They will stoop to levels you may not desire to follow.  Seeking to understand their motivation may be less important than dis-associating yourself before they get into big trouble.  Taking the risk of becoming implicated in legal or other areas of corruption is reason to move away.