I would like to add that many properties are over-priced, so an offer at 83% might be realistic. HOWEVER, there are properties on the market which are priced to sell and will sell fairly quickly, much closer to list price. There are two strategies for listing. 1) price the property to sell quickly, which means not leaving much room for negotiation. or 2) over-price the property, hoping that you will get an offer, knowing that most buyers will try to low-ball you, working to a place in the middle. The problem with #2 is that you won't attract as many lookers and potential buyers. The problem with #1 is that most everyone still wants to haggle even if the price is right, because "haggling in real estate is what you are supposed to do." When you submit your offer, you will quickly find out that there won't be much haggling from the extremely over-priced properties, or the ones which are really priced to sell.
In summary, not all low-ball offers are the same. It all depends on the property itself and the list price.
In summary, not all low-ball offers are the same. It all depends on the property itself and the list price.