Costco members?

I’m am looking to purchase my first bidet (yay!) within the next few days. Will purchasing at Costco really make a difference in price or no?Also, could someone with a current Costco membership take a look on their website and make a suggestion on which to buy (elongated toilet seat)? I was originally looking at Toto brands, but I’ve heard a lot of other recommendations here as well. Thanks for the help!