Advice please!

I'm looking for a cargo bike.

- Needs to comfortably carry a 100kg me and like 30 - 40kg in shopping
- Needs to comfortably negotiate gravel (so fairly phat tyres)
- Ideally sub-$4,000 AUD
- I'm very open to it being a non-electric bike. An acoustic bike, if you will.
- It will supplement a Cannondale Quick (used for commuting) and a Shogun eBike (used when I'm feeling lazy). We're #CarFree
- Does not need to be new

I'm currently using the Shogun to carry me and the shopping, and I'm slowly destroying it. I think it needs to go back to its intended use - a VERY BASIC runaround bike - and I should get something more suited to cargo to carry... cargo!

What are your thoughts?

EDIT: Boosts welcome, and #BikeTooter