I like to buy a couple at a time. I get them for $10-$30 online, but it is the point that it takes over a week to get them and he has to be careful with them. He's being extra naughty lately. He's going on his third round of antibiotics in about 4 weeks. He was sick and they gave him a regular antibiotic and by the time we had to bring him back for a follow up he had bronchitis on the verge of becoming pneumonia....so another antibiotic with steroids. That seemed to work and he started coughing Monday night and last night he could hardly breath so my boyfriend brought him to the emergency room and he's got croup and an ear infection. Not that I'm condoning his behavior, he's still getting in trouble, but I'm a little lenient with him right now.