Maybe I should have asked for responses for agents only.
@Chris Mason thanks for the suggestion about looking at agents listing prices compared to the final sales price.
The condescension in the rest of your reply was not necessary, but thank you for taking the time nonetheless. I understand that you seem to think the problem is with me or my clients, not the listing agent or seller, duly noted.
According to your logic, if a house is listed on the MLS for $100,000 but the market indicates it is only worth $80,000 it would be a waste of time to offer a "lowball" $80,000? I would not advise a client to put an offer of $100,000 if the comps do not support that price. Sure, they might love the house, but they are paying too much.
@Jeff B. if you read my whole post, you would see that I mentioned the offers are within 10-12%, not anywhere close to 50%. Take the same $100,000 listing, and you would consider an offer of $90,000 to be lowball, not genuine, and not worthy of a response? I think that is a bit harsh.
Since the properties that I have encountered a "declined offer" response on have not actually sold, I think your replies are based on a false presumption that there are multiple (or better) offers. I understand how multiple offer situations work, that is not what I am referring to. One of those properties has been on the market for 587 days. I guess the consensus is that 10% is considered lowball.