What is the benefit of buying Apple from Costco?

I'm curious to know, what exactly is the advantage of purchasing Apple products from Costco? Is it a matter of price savings, exclusive deals, or perhaps a more streamlined shopping experience? Do Costco members enjoy any special perks or discounts when it comes to Apple items? Additionally, is there a wider selection of Apple products available at Costco compared to other retailers? I'm eager to understand the key benefits that make buying Apple from Costco a compelling choice for consumers.