Final answer:
Under the Australian Consumer Law (ACL), John may have rights if the contract is considered unfair. He should consult with a lawyer or seek advice from the relevant consumer protection agency to assess his options.
Step-by-step explanation:
Under the Australian Consumer Law (ACL), John may have rights if the contract is considered unfair. The ACL protects consumers from unfair contract terms and prohibits businesses from engaging in misleading or deceptive conduct.
In John's case, if the contract did not clearly disclose the total purchase price of the electrical appliances and if the price was significantly higher than the normal retail price, then it could potentially be considered unfair. John may be able to seek remedies such as a refund or compensation for the excess amount paid.
It is recommended that John consults with a lawyer or seeks advice from the relevant consumer protection agency to assess his options and pursue his rights under the ACL.