Planters Peanuts 16oz 2 for $3.50 + tax at Walgreens. YMMV

Was just at Walgreens and they have buy one Planters Peanuts 16oz for $4.49 and get a second free.
When I checked out, the price for one was $3.50 and the second was still free. After tax, my total was $3.80.
I didn’t look if this applies to other sizes. My zip code is 74133.
I’m using the mobile app and don’t see where to attach my receipt but it looks like this:
Planters Lightly Salted Dry Roasted Peanuts 16oz — 3.50
Planters Lightly Salted Dry Roasted Peanuts 16oz — 0.00
Subtotal $3.50
Sales Tax $0.30
Total $3.80
Here’s a link to the product FOR REFERENCE ONLY. I don’t know if you will get the same deal online.
https://www.walgreens.com/store/c…92-product