Ya...with the confirmation of FFXIV being receiving microtransation system (cash shop) its possible to be iike this...i've seen MMOs where you buy items that give you the right to do 1 universal shout (appears in every area of the game) and seems like what they want...as Yoichi Wada own words: “We soon learnt that there are a lot of people who want that kind of model, so we would like to introduce more pay-as-you-use items into the game." So its possible to be like you buying an item with a few charges...once charges are gone its useless and you will need to buy a new one.

Source: http://www.develop-online.net/news/3...ival-says-Wada