Costco currently sells Xbox One Controller (Black or White) for $39.99
Good deal versus paying more elsewhere and especially if you value their return policy as a extra peace of mind.
Bad news: You need to sign in to see the price of $39.99, from what I'm seeing. Also, shipping is $3.99; not free unfortunately.
YMMV but what I recommend is to price match to other retailers, like Best Buy, for example, however you have a better success of doing so in person since you, again would need to login to see the price and show it to the associate. I don't think online or telephone BBY rep will be able to replicate the deal.
I don't think this will generate any 👍🏼 but I want to help out by sharing thus prospective buyer get more choices to shop.