I saw those in a LFS. I was surprised more at the packaging than the price. The packaging I saw included the MagClips and one of each size holder. So if you needed 2 for a heater or 3-4 for a spraybar, you would have to buy many packages. At that price I could have bought enough replacement suction cups to cover all my tanks and last a lifetime.748johnd said:Over time all suction cups suck. The suction cups on my Eheim, Stealth, Tom's surface skimmer and feeding rings all lost suction. You might want to try Magclip Magnet Suction Cups. That Fish Place sells them and I'm sure others do, too. They aren't cheap, but they beat useless suction cups.