Chapter 16_Remedies in Contract

Question8A car dealer agreed in a contract with the Stellar Motor Company not to sell any of the cars or parts supplied by Stellar below the listed price. He also agreed that for each breach of the agreement he would pay $3000 as 'the agreed damages which the manufacturer will sustain'. In the light of your answer above, how would you classify the sum here? Ignore the operation of the Australian Consumer Law.