So, wish me luck, I'm aiming to spend $150 per week on groceries including nappies, cleaning stuff, toiletries. Being strict as DP and I are going down the separation path so money will be tight.

This is from someone who used to chuck smoked salmon, brie, dips and pate into the trolley with gay abandon (Actually worked out I was spending at least $64 per month on smoked salmon and brie alone, not to mention the other stuff).

So this is my budget (for me and two DDs):

$23.50 nappies/wipes
breakfast cereal $6.50
bread $10 (two loaves)
sandwich fillings for lunches $20,
cleaning/laundry/toiletries $$25
milk $14 (allowing 2 litres per day)
Dinners $70 (working on $10 dinner per night)

I reckon there's a bit of leeway in the dinners e.g.. spag bol, chicken cacciatore is about $4-$5 per family dinner. Plus I might be overestimating how much bread/milk we use.

Might get a bigger freezer so I can cook more in bulk.