New way of dealing with Low Ballers?

I find sellers' righteous indignation of low-ballers silly. "Oh my, I'm so offended by this offer." Really? Sheesh! If you don't want to be bothered with offers lower than X, then say so clearly in your ad, or just state your price is "firm". Then simply ignore any offers which are less. Punishing someone for making an offer lower than expected is about as elitist as one can get.

One who constantly lowballs you at all times of day and night with hopes that you will just give in and say yes.

Now, if someone is harassing or spamming you, that is another story. That kind of behavior, whether from a low-baller or other, should not be tolerated. If someone is doing that I'd take it up with A'gon folks to get that person's account revoked.