The aim was to come up with the bid that is *just* better than your opponent but still leaves you room to make a profit.
The 'softball' tactic would be charge the client to take the goods, then sell them. This is the most lucrative but leaves you very vulnerable to being outbid by the opposing team.
The 'hardball' tactic would be to charge nothing, and still sell the goods. This leaves you slightly less open to be outbid by the other team but not if they go for...
The 'extreme hardball' tactic which is to pay the client a small amount for the items and then sell them on. This would have been the winning tactic in that task.
Susan realised the desks etc had value and assumed they were supposed to pay but was accused by Zoe of getting it wrong and trying to sabotage the task. In the confusion, her idea was abandoned. Zoe only realised the mistake afterwards.
Helen's team went for option B and ended up winning both bids.