The current non-stop to Perth (went to Darwin during The Plague) is more expensive than the one stoppers via the Middle East or Singapore, but you get on at Heathrow and 17 hours later walk off in Oz, for people wanting Perth as their final destination in my experience they are generally happy to pay for it, just yesterday I had a guy pay £8k for a biz seat next month and his daughter (in her mid-20’s) paid £2200 for an eco seat on it, the Qatar Airways option was £5k and £1.2k respectively, that happens regularly, although of course Perth, lovely as it is, isn’t a major destination, would imagine once Sydney comes on line it will be a very busy flight. And if they do the same with Melbourne that will be too, do far more to Melbourne than Sydney…