I know I have seen discussions in the past where people who live in areas where there is no snow (and no ice melt) find it difficult to get cheap Calcium Chloride because shipping kills the deal.
Staples has 50lb Calcium Chloride for $15.99 with free ship to store or free shipping when you use your Staples Rewards Membership.
http://www.staples.com/Snow-Joe-MELT-Calcium-Chloride-Crystals-Ice-Melter-50-Lb-Bag-MELT50CC-/product_1917537
Staples has 50lb Calcium Chloride for $15.99 with free ship to store or free shipping when you use your Staples Rewards Membership.
http://www.staples.com/Snow-Joe-MELT-Calcium-Chloride-Crystals-Ice-Melter-50-Lb-Bag-MELT50CC-/product_1917537