What is "low ball"


A lot of ads say something to the effect "no lowballers please". So I'm curious what people think is "lowball".

I'm looking for a percentage from people. I'm thinking less than 75% of asking price is where "low ball" kicks in, but I'm interested in what the general consensus is (if there is one).
jaxwired
But sir, it's valued at over $3000.00. Why such a low offer?
I would be willing to let it go for $3000.00 and no less!
Maybe, but I still want to know how it sounds. You just don't get it do ya Hifi. High&Dry I'm still standin.
Here's one for ya. How about a New D-35 Martin Guitar for 1700.00 free shipping and insurance, no paypal fees. Case, 3 sets of strings, Combo hygrometer therometer, combo tuner metronome also free.