We do spend a lot less as a couple, maybe $250-$300 a month.

The secret is to eat incredibly poorly, we've become economic vegetarians because meat & fish is too expensive for our income, we never eat name brands and what's on sale plays a huge part on what ends up in the cart.

The tips and tricks other people have suggested will help you shave money off your spend but if you get it down 20% then you've done great. Groceries are one of the last you get what you pay for items.