That really is a philosophical question, I think. New Zealand has seemed relatively content on the whole with the $5 copayment. It did increase from $3 several years ago, and that has not altered the pickup rates at all. I think $5 per item is relative low. Sometimes it's not $5 if the cost of the medicine itself is less than that.
As I did mention in my introductory comments, people pay for only 20 items per family, and after that there's no copayment at all. It's a relatively small amount of money.