In any negotiation I think it's important to take your time but also hurry up if that makes sense. If the "Seller" needs to move the property quickly I think it is completely fair that the "Seller" or "Sellers Agent" be honest with the "Buyer" or "Buyers Agent" and let them know exactly what there time frame is to respond to a counteroffer. So for instance if you (The Seller) need to move quickly I think asking for a response within 24 hours is fine. If there is no sense of urgency to sell, the "Seller" always has the option to continue to show the property and wait for a response while generating other offers.
In negotiating a deal it is important to care, but not that much. If a person is a serious "Buyer" with real intentions to purchase a property, they will know exactly how much they want to spend and how quickly they want to respond.
I hope this is helpful, thanks for the question.
-DNassi "The Corcoran Group"
I say it depends on price, terms and time, just like all negotiations.
Win/win or no deal. A savvy seller and their listing agent know their time constraints, transaction by transaction.