BBJ tables tend to be fishier than your average table for any given stakes but I have still always avoided them due to the insane rake (I play 6max FL so the rake REALLY hurts).

What I'm wondering is, at what point does the BBJ become +EV? Assuming that for every raked hand an extra $0.50 is taken to contribute to the BBJ, and that 70% of the BBJ is distributed among the 6 players at my table if hit, how high does the BBJ need to be before this becomes +EV? I did some really scrappy calculations last night and came up with a ball-park figure of $500,000 but am not so sure now.

Any good mathematicians wanna try and come up with a figure?

Note: Please also include in your assumptions that nobody on my table lives in or around the Doncaster (UK) area.