I'm A Celebrity standbys that didn't get on - and staggering amount they get paid

mirror.co.uk:

Anything and everything can go wrong on I'm A Celebrity, so there always needs to be a back-up plan. A number of famous faces have dramatically walked out of the jungle because they can't hack it, while others have been booted out early for breaking the rules.

Gemma Collins sensationally quit after just three days, while Spencer Matthews was told to leave two days into his jungle experience, later admitting he had a steroid addiction.

When a celeb departs so early into the series it can provide a major headache for show bosses. Luckily, they make sure there is a standby ready in case of such a situation - and they get paid a staggering amount of money even if they don't make it into the jungle.