I have purchased from value mailers through ebay and on amazon. I have never had a problem before. I mail about 4000 packages a year. I actually sought out these bags because they were such good quality for the price. I think they changed their manufacturing. These bags are awful. You have to stick your hand in each envelope to get it open and each individual bag is stuck together. Also the labels don't stick very well to the bags. The bags are no longer a grey on the inside they are black on the inside. I wonder if they are making the bags differently now. The quality has gone down hill. I would hesitate to buy again.