Costco! ALL CLAD 7 Piece Copper Core Cookware Set! $699!!! Is it worth it?

Costco has the ALL CLAD Copper seven piece core cookware set for $699! Which is a bargain compared to buying them individually or as a set on Amazon ( https://amzn.to/2Jo1r6Y ).  Even so I am not sure whats the difference between the Calphalon version of this copper cook ware set ( https://amzn.to/2kU1VHd ) at a fraction of the price.  Is it worth it?  If you know let me know.

Products used in this video:
Samsung S8 Unlocked Smart Phone: http://amzn.to/2CaLhxm
Microphone: Blue Yeti USB Microphone – Silver http://amzn.to/2D9hW37

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