Use this as a negotiation exercise.
If you do, first things first. Know your best alternative to a negotiated agreement (BATNA). Try to factor in the opportunity cost, i.e. what else you can be doing with your time if you do not take the job.
With that in hand, accept any offer higher than the BATNA. Reject any offers below the BATNA. Either way you are best off.
Of course it is easier said than done ...
(see http://en.wikipedia.org/wiki/Best_alternative_to_a_negotiate...)