I have made them and sold them for $2-$4 depending on size. They were filled with rice and I added wintergreen or orange scent on a cotton ball put inside the bag. I am going to try getting the flax and mixing with the rice and also going to look for the buckwheat. I did not make any this year as it seemed the market had been saturated where we sold them. If I used the flax exclusively I would charge a bit more as the flax costs more than the rice.