When Thalita an Australian travelling to Korea, she shops and bought: One set parfum 342.400 Korean won (KRW) Jade stone KRW 684.800 Several luxury clothes KRW 4.280.000. (spot currency at that time KRW 856/AUD) (a) If purchasing power parity is applicable, how much does each of these items cost in Australia? (b) By coincidence Thalita was stopped by customs staff at Sydney's Kingsford Smith airport, and had to pay an import duty of 20 percent for these items. Are these items worth it if the price of each item in Australia are a set of perfume, jade gems, luxury clothes for AUD 450, AUD 1,500, and AUD 8,000 and Thalita incurs flight (return and return) and hotel costs of KRW while in Korea of 2,500,000