Good price for the XL, only $50 more than the regular Pixel 3 128GB but you only got 1 colour choice (maybe not so important if you use a case).
Available in quite a few stores, otherwise delivery is available ($5.95 here).
For the extra $50 you get a bigger display (6.3" vs 5.5") and battery/battery life (3430maAh vs 2915mAh).
Phone is unlocked.
Thanks to Pricehipster
Edit: Now only the Optus Variant is available (still unlocked). "Please note: This unlocked phone includes full manufacturer’s warranty and features Optus network branding. This means that the phone is not locked to a specific carrier but may come pre-installed with Optus applications. Additionally, when you power on the device, the Optus logo may display."