I'm in the market for new AT boots. I have poked around online at what ski shops in Australia are carrying stock-wise, and I am seeing boots which have been out of production for five to ten years. I do quite a bit of high-consequence climbing/skiing and need to trust my gear. I will not allow them to push me towards an old pair of new boots, but what is the shelf life of an unskied boot (assuming they were stored in a cool dry place out of direct sunlight etc)? And would you buy them?