Calla lilies

I bought Calla lilies today. This is the second (and possibly the last, depending on how long they last) time I've bought Calla lilies. The first was in Singapore, where the florist assured me that the lilies will be able to last for at least a week. Ironically, one of the lilies bent over the next day and they were all dry and withered by the third day. Since the weather here is much cooler, I have higher hopes for the mortality of this bunch.