Well you sort of answered your own question, and I guess did'nt read how this thread was started. a LOW BALLER is not a serious offer. Here let me explain. I'll give you $100.00 for you house today. I'll give you $50.00 for you vehicle. Well? Come on. These are two serious offers as you explained. That didn't insult you did it? What I did was just admit you do not know what your house and car are worth, so as a buyer I think you're uneducated because I just LOW BALLED you. Still not insulted, well good for you. Me and quite a few other here DO get insulted, and when we get insulted the person insulting the seller usually never leaves with what they came to buy.
OK let me spell it out for you.
When a buyer P-off's a seller by low balling it doesn't matter if the buyer offer MORE than the selling price. Now for some people money is the driving factor, never for me. It's all about attitude, respect, etc.
If a buyer is a low baller he steps into a whole new realm. If he low balls me then I think - DO I LOOK THAT STUPID? Then the negotiations takes on a whole new life. Then it becomes a P-ing contest, and rather than being a NEGOTIATION between two people it become how can I prevent this guy from buying this "bargain". Beside the buyer thinking I'm a Moron, I then instantly thinks he's a Moron and nothing more than a tire kicker wasting my time.
There are ways to negotiate productively. Low balling is not one of them
If you are going to sell things on a regular basis you are going to deal with the public.... most people are tire kickers and even serious buyers are often looking above their budget or looking for something so specific that it doesn't exist ........ getting emotional over low starting offers is going to cost sales and crush word of mouth about you.
One should expect low offers on used equipment in particular...... there is always massive risk for the buyers and rarely is any particular item exactly what someone wants or needs.