Grey Goose Wanna Be

I am a fan of Costco anyways, but after a friend of mine from party of five told me that they carried vodka from the same distillery as Grey Goose...I became their biggest fan!  We love Grey Goose but one 750 ml bottle can run around $28.  I decided to give the Kirkland Signature Vodka a taste test, using my sister, who is a vodka enthusiast...she couldn't tell the difference.  She loved it and since you can get a humongous 1.75 ltr for only $26.99.. we are sold!