I seem to recall people paying ~4k.. we'll say $5k. Presumably this is a fairly straight-forward case. I mean you showed the documentation as per their rules. Lets assume that. This is just a matter of an attorney walking in to prosecutor and saying this is nonsense, lets take this to a judge. THere isn't even a reason for you to be there to begin with... now if you have extentuating circumstances outside of what is being discussed then I really have no clue.
So how much would you think you'd need to pay for a tax attorney on a case about as simple as can be ?