Yep they are expensive.

But they are covered by a lifetime guarantee. And they last forEVER just about. I am using some of mum's old Tupperware that she used for 30 years, still going strong. And if/when it gives up the ghost, I can take it to my local rep and they will replace it free with the current equivalent product.

Plus, those can openers are the bomb.

Having said all of that, for everyday fridge/freezer storage for left overs and the like, I use Sistema. My pantry etc though is totally Tupperware. Love it.