Yeah, I visited my local HF yesterday. They had just 3 packs of two left. I grab all three. My son ask me what I wanted those for. I explained to him that the regular rotor blades in a fabric shop are $8-$9 each and these were $1.49 for two. I do have a question though for those who have used these. Do they cut into your mat? I really would not like to ruin my selfhealing mat.