Even if it's $30 out the door for 10qts, that still not a bad deal for a Dexos licensed lube... and you didn't have to run around town hitting up all the local AZ's or dealing with rebates! 😉
I checked it out when I was in Costco last week. Label said manufacturer was Warren. No surprise.
Warrens cornering the PLP market it seems... Wally's, Amazon and now Costco. Those are some pretty big retailers.