As the title states, Walmart [walmart.com]
has the Apple Smart Battery Case for iPhone 7 in White for $81.99 and Black for $82.77. Bonus points for using Chase Freedom.
Alternatively, Amazon [amazon.com]
has the Black case for $82.77. Bonus points for using Discover IT.
I opted for the Black case since I recently bought a Black iPhone 7. Great for those who jumped on the T-Mobile deal for the 256gb or especially the cert pre-owned 32gb.
Yes you're still paying an Apple premium, yes there are other (external) batteries/battery cases with higher capacities, and yes it's not the lowest price according to CCC ($80.41). But I feel it's worth it for getting a new discounted Apple product that is for sure compatible with the device. The phone's battery life is mediocre at best even for the average user (I came from budget-friendly Androids), so this should help extend the device's useful life.
ps. This is my first deal post, so pls don't bite! (hard...