[Alneyan]

The Frost Brand (along with other weapons) has also been given an aoe of 1, so it should be stronger now than before; that alone probably warrants the cost increase, but I am no expert on weaponry.

One reason for raising the cost of the Water Bracelet might be to make it harder for non-water nations: as it stands now, any nation with random mages can reach Water 2 fairly easy, and that level gives access to some of the best stuff in Water (Boots of Quickness and Clams in particular). With the Bracelet requiring Water 2, those nations will need to get to Water 2 via other means to begin with.