There is only one Cost Co in the whole of New Zealand, and people say you can get cheap petrol/gas there but if they living too far away and have to drive there to get it, it defeats the purpose lol.
I've only been there a couple of times with my cousin, who was a member. The only thing really worth buying is the rotisserie chicken, and people rave about the $2 hot dogs, but IDK they are nothing special after you've had them a few times.
If you have the cash, you take a giant trolley in and fill it up with boxes and boxes of frozen food, to fill up in your giant freezer and pallets of toilet paper, for your giant toilet. But people do not have giant houses here. We now have tiny shoebox joined together houses.