There is no way of answering that question. First, there's no way of knowing what the seller's situation is, or whether they are completely delusional about the value. So even if a value could be determined, there's no way of knowing whether a seller would accept it. Their own agent might not know.
Second there's no way of knowing what the property is actually worth because you don't mention size or location, but even if you did, value would be dependent on proximity to utilities and/or the ability to put in a well and septic system.