A person who offers an unreasonably low amount for something they are trying to buy. Typically an offer of 30% (or lower) less than the asking price is considered a low ball offer.
Item X is for sale for the amount of $1500.
I'll give you $1000 for your X.
GTFO of here. Like I said, no low ball offers you POS! And stop wasting my time!
a person who bargains extremely lower that retail or reasonable price. also, being ridiculously cheap.
the price for the phone is $250. no low ballers.