i think it depends whether you're looking at the fees or expenses? i haven't been exposed much to the UK but im pretty sure everything there is pricey for us since the exchange rate is so high 😂 as for AUS, i suppose the fees there are cheaper than the better unis in UK. on the other hand, the living cost really depends on which city you're planning to go as well like for instance Sydney (most expensive city in AUS) is about the same as London apparently whereas Adelaide is the most affordable amongst all. here's a lil info attached below about Melbourne, since it's a common choice for many :)