I continue to be amazed that people actually pay for floss....you can't get every brand free, but if you're not opposed to Reach floss, you can get some for free at Target, and maybe even a few other stores if you wait for a sale. There is a new printable that you can print twice for double the savings. I usually get these and donate them since my pile is overflowing!
At Target Reach floss is .97$1.00 off REACH Floss or ACCESS Flosser
= FREE floss after either coupon.
The coupon prints with a 30 day expiration date, so there is a little time to wait for a sale :)