I've been buying these for about a year now and I'm very happy with them. Some reviews I've read have said that they are not very strong and have ripped, but I have never had a problem with this (and we overfill them on a regular basis and have to pull them out of the bin, by the handles, with all our might!) I have them sent to me automatically each month and have never run out yet, it's a great system! They fit the bins perfectly. They do seem a little expensive I suppose, but they are great, well worth the money in my opinion and I will continue to buy them for as long as I have the bin.