I wasn't actually, but I am now
You're correct though, there are stacks of companies on Tradecarview that will list cars coming up at auction as their own stock, at a price they think they'll sell at, then they'll try and get someone to "buy" the car at that money, then they'll go and have a crack at the car at auction. If they don't buy it, they tell the customer that the car was already sold and that they'll keep the money there to try and find something else for them, dodgy buggers.
Apart from one particular company, I trust most sellers on Tradecarview as far as I can throw them.