If the prize is 0.1BTC what would you do? Split the prize and walk away with 0.05 or Reroll to gamble for the full prize?
I say it depends on the situation but judging the said scenario, I'm already lucky to win half of the prize and re-rolling it again doesn't guarantee that I will walk away with the full prize because my chances aren't that great too. Plus, in my situation, that kind of money is already huge as it would take me few months of labor just to have that amount.
having a re-roll just because you do believe that you could get the entire amount on next roll which is really indicates that you are just being too greedy.
Well, everything would be depending on the organizer if ever they would decide to split up the prize in half with other winner or simply re-roll just to have that 1 winner.