The tickets are printed and the room is booked for a $100 per head audience with Roberta Williams, the ex-wife of gangland murderer Carl Williams.
So for one night only - so far - Hobart's conference centre will be the venue for wannabe gangsters willing to stump up for the Q&A dinner with on July 26.
Organiser Mick Tonner, from Hobart's Xtreme Physique Gymnasium, says most of the money raised, after expenses, will go to a cancer charity, yet to be named.
Cancer Council Tasmania CEO Lawson Ride said his organisation had not been approached by Roberta Williams or her representatives about a donation.
"We would not accept any money from the event they are organising,'' Mr Lawson said.
Ms Williams will not profit from telling her story made famous by the television series Underbelly, he said today.
Mr Tonner said Tasmania's bodybuilding community was deflated by previous attempts at hosting events until it hit on this idea.
The media never seemed interested in power lifting and bench pressing, he said.
"It's basically a question-and-answer-type evening with Roberta relating to the Underbelly series and a meal," he said.
"A lot of people are interested in how Roberta turned her life around and about what Carl was involved in.
"People might get to know about the true story behind Carl, and it's an opportunity for a charity to benefit.
"And if we have to extend it to a second night then we will do that by popular demand."
Drug kingpin Carl Williams is serving 35 years in jail for four murders.
But more than anything, Williams and his ex-wife's popularity has been driven by the popularity of Underbelly, the Nine Network's dramatisation of Melbourne's gangland war.