Hi all, I'm new here and desperately seeking to help my brother out. My brother have sold a car privately to a buyer with a roadworthy certificate and has stated that in the receipt. The seller has bought the car but decided to take it to a mechanic for a check up and have come back with a hefty bill for the repairs needed, none of which my brother are aware of. Brother then decides to refund and take the vehicle back but now the buyer is demanding he pays a couple of grand more than what he bought it for or pay for the repairs. I'd like to ask where my brother stands and what he can do under Australian Consumer Law? Can the seller ask my brother to pay for the vehicle inspections as he bought the car before he took it to the mechanics? And can the seller ask for more money on top of which he bought it for? Thank you all.