I forgot to compare the price for the big tub of ricotta, it was 5.59 at Costco for 1kg. Although I have bought a big tub like this from Woolworths before, I can't find it online. Their best price for ricotta is $8.99/kg. Aldi's best is $7.97/kg.
If anyone can comment on the cost of the scallops that would be helpful. I really have no clue there.