The programme is a joke, as they can just openly cheat by massively under paying the other contestants.
I thought the objective was for people to judge fairly for what the place is and worth, not "I don't like glamping so I'm not paying".
These people make the prize worthless.
Why not try running the programme as normal but after declaring the winner finish with "but as (whoever) cheated they are disqualified and the real winner is".