It depends if your counter offer is verbal or in writing. If a buyer gives you a written offer, then you review it, make changes, initial your changes and give it back to the buyer, then you have to wait for the buyer's response.
The problem with entertaining another offer during this time is - say you get a second offer that is better, and you sign this 2nd deal (so it is an executed agreement of sale) and in the meantime, the buyers for the first offer accept your changes, initial them etc - now you have 2 executed agreements of sale - time to call your attorney.
I understand why people want to do this, but it never ends well. It is always best to treat people the way you would want to be treated. - Wed Feb 20 2008, 16:22