Hi, again, Gran.
I just did a Google search for "buy Techniques cookware" and what came up were listings for it at QVC. I've never shopped QVC so I can't advise any further but, perhaps, you can find some cookware that is similar or equal to what you are looking for by doing the same search I did.
Good luck with your quest.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!