This box has a chute for dropping large parcels. It opens with a combination code. You can register it with couriers so that they can scan the barcode in lieu of a signature. I bought one recently, as my gate prevents easy delivery to my front door. This site used to sell it for $180, but now it's only $149. Bunnings should pricebeat by 10%, making it just $134. That is dirt cheap, as even basic letterboxes sell for more.
Delivery is $20 if you only buy the parcel box, but if you buy both you do not pay shipping (free shipping > $200). Bunnings will pricebeat on product price only if you buy both, as shipping is free.
The attachment for normal mail can be found here for the Quattro and here for the Orbis
I bought both when it was advertised at $180, by getting it pricebeat by Bunnings by 10%. Just had to show the website, no questions asked.
I remember Bunnings selling both products for >$300 total.
Gotstock delivers for free above $200 (so if you buy both, you're good). If you get it from Bunnings you will save, but it's a big box….
The product has holes for mounting (bottom), and "flaps" for putting in a concrete foundation.
For details on how the product works, see http://www.pakmanparcelbox.com.au/
Gotstock is "Wesfarmers", which should be good.
plus $20 delivery in title…