No appearance money.
It was reported years ago that they get paid whilst they are in the house (approximately £250 per week) - this is apparently so their bills/direct debits etc can still be paid. This money stops if they walk and it stops after they are evicted, but they are still contracted to do BBLB and BBBM.
They get paid for magazine & tabloid deals and probably for any other 'guest' appearances they make elsewhere - NO WAY should they be paid appearance money for being in the house!
