Good price for the Shield TV Pro @ Amazon UK as per https://au.camelcamelcamel.com/product/B07Z6RD4M9 especially if you're a Prime member. There have been some slightly better deals from Australian retailers but they're quite rare and never get much lower than this. Stock is UK-based so there is a bit of a risk involved but I've delt with Amazon International returns before and never had an issue. If you don't want to take the risk then maybe wait until the Boxing Day sales.
Not sure how long it will last at this price so get in quick if you don't mind waiting until the new year for delivery from the UK.