How much would you pay to be on Are you smarter than a 5th Grader?

[rsk111]

I'm sure many have seen this show or at least heard of it. I can't think of a show where it would be easier to make a million dollars.

Here's a link to another OOT thread about it for those unfamiliar with the show.
Link

Let's say that a producer calls you up and says that you can be their next contestant if you pay $X. What is the maximum $X you would pay to be on the show. Consider tax implications and all other costs in your response (e.g. family bugging you for money, "cost" of potentially being embarrassed on TV, etc.) in your response.