Not sure where this is, but I've dealt with low ball listings before locally in the Bay Area.

I have good ball-park rules for just about everything I need to estimate cash-flow, ROI, and all the other metrics in my model when I can't get hard data, but not insurance. 

I have good ball-park rules for just about everything I need to estimate cash-flow, ROI, and all the other metrics in my model when I can't get hard data, but not insurance.

It takes a while to get started, though once the ball starts rolling, with a little work, it just keeps rolling. i.e.

We are under negotiations and the ball is in their court with an addendum.  

I was just ball parking the interest rate on the high end.

And the way they busting each others balls is hilarious...

The higher the premium the more likely they are to play ball as the work is just the same. 

Do you think it’s too much of a low ball?

It seems to me that this might have come up in a municipal lien search, or at least in the settlement where we (and I think everybody) requires final water, sewer and gas bills to be paid off from the proceeds at closing.From the way you've described the charges, it sounds like a sewer betterment charge, which should have been disclosed in the listing and should also have shown up on the municipal lien certificate (MLC).Somebody dropped the ball.