My cat has been addicted to these mylar balls ever since I purchased a pack of toys that had ONLY one. He has lost it several times so now it's a one room toy. It has now fallen apart on him, and the color is fading. I was glad when I was able to find them, let alone in a large 35 pack. It will take him years to get through all of these. If you are a small business, they come with a small tag on each ball so you can price them and sell individually (if you're a pet owner like me, they are easy to remove). I've seen multiple sites sell a pack of 6 for $10. I wasnt willing to pay that much for something so cheap to make. So I was happy to see the pack of 35 for a great price. There are different two tone colored mylar balls and these seem to be better quality then the mylar ball we have. My cat was beyond excited to see a new mylar ball, that he got the first one stuck within seconds. Every playful cat MUST own these!