Not the cheapest letterboxes, but they rarely go on sale. Seems to be an Aussie company that's been around a while. Good for medium sized packages to be left somewhat securely.
Price only drops about $50 and shipping is around $35 but can also be picked up from their Thomastown store Monday to Friday. Posted in case anyone else was waiting (hoping) they'd go on sale.
Some information from their website for the Noosa model:
Weight 16kg
Height 100cm
Width 35cm
Depth 27cm
Carton dimensions
113 x 41 x 33cm
Structural Warranty: 5 Years
Letterbox colour: White / Black
Feature colour: Bark / White / Merbau
Finish: Matte
Material: Powder coated galvanised steel
Parcel receiver: Yes
Parcel capability: Small to large parcels
Key lock: Yes
Takes A4 mail: Yes
Mail & parcel retrieval: Parcels and mail via rear door
Milkcan Noosa Parcel Pillar Letterbox? Once again you hackers have guessed my passphrase