Single Pole 1 pack: https://brickseek.com/walmart-inv…=85882400
2 pack of 3-way switches: https://brickseek.com/walmart-inv…=59489351
walmart is clearing out the TP Link wifi switches. Now even cheaper. They were in the electronics cabinet in my store.
single pole 1 pack was $7, two pack of the 3-way switches was $15.
YMMV