Definitely worth trying things to see what you like. I shop there and at Coles for stuff I can't get there or prefer a different brand and I save HEAPS.
Only things I really don't like are the rolled oats, laundry products (I just don't find them as effective), meats (I find them quite fatty), and the veges are in bulk packs and we just don't need that much of anything all at once. The fruit can be touch and go, but TBH I could say the same thing for Coles and my local fruit shop.
In short, they are worth giving a go. Definitely cheaper. You can also buy a trolley token to keep on your keyring so you never have to worry about not having a coin for the trolley (Some other shops have coin trolleys too btw. You get your coin back when you return it.)