After trying to purchase balloons for my oldest's 16th a while back, I was modified at the cost of 16 latex balloons at my local supermarket. This year, I thought id be smarter for my twins' 16th and get the tank at my local warehouse store, which halved the price. Today, I found a better deal at 5 Below. Foil filled balloons were $1 each and latex 3 for $2. If I remember correctly, the Dollar store offers something similar.