Some Walgreens have G.U.M. Flossers on sale for $2.99 B1G1 Free.  Here’s how to them for $0.75 each:

G.U.M. Flossers $2.99
Buy 1 Get 1 Free
Use 2 $0.75/1 – GUM Flossers – (bricks.coupons.com)

Final Price:  $0.75 each

Thanks, Wild for Wags