It'd be a cheek to charge, the audience is a tool to make the programme, a lot is asked of the audience (of any programme, not just gladiators). Sitting for a long time, long stretches of nothing happening, repetitions of the show for pick ups etc, being told when to laugh and cheer, not balls up continuity by swapping seats or buggering off halfway through. It's not "work" by any means and it's great to see a programme being made but it's not an audience in a traditional sense of going to see a show (which is for the entertainment of *that* audience, this for for the entertainment of the tv audience), always good fun though, I've done a few and never regretted it