Just picked up a couple at a Walmart near me for $30. They were not with the other GoPro models but I found them in locked case where they kept printer ink. So YMMV.
Currently listed as $148 on Walmart.com
Link for reference: https://www.walmart.com/ip/GoPro-…14&veh=aff
https://brickseek.com/walmart-inv…u=4993359