Why buy this obscure and largely forgotten film? Because it was a genuine attempt to say something serious about the violent history of settlers and aborigines in Australia. It's not perfect. The comic relief by Tommy Trinder is a case in point! But it tried to show to British audiences in the post-war years something they would probably have never have otherwise known about: what happened to the indigenous population when white settlers moved into the Australian outback.
Sure, the acting's a bit creaky in parts, and the ending is sort of bizarre (there's a story that Ralph Smart was forced to change his dark ending which included the massacre of the indigenous tribe for a happy ending in order to get government approval to shoot the movie), but along the way it is a real insight into what British film makers (including Australian expats like Ralph Smart) thought about serious topics like colonialism. And along the way, you get some great performances from Chips Rafferty (as the hardened settler who can only see "his" way), Michael Pate (as the frontier ranger who understands only too well what will happen to the Aborigines when the settlers move in), and Gordon Jackson (as the sensitive Scot who tries to see both sides of the story). Hey, even Tommy Trinder isn't too bad!
It's a product of its time, and a real insight into that time. And that's why you should buy it.