Instead of Ebay, think of it as SkiBay. Vintageskiworld.com has rounded up old posters, patches, boots and skis from the days of stem-christy turns and broken femurs, when skiing was still far from the mainstream.
Want a 10th Mountain Division Pin? They got it.
Want an old tourism poster from the Alps? This is the place.
Want an old pair of skis? Well, chances are, around here, you can find them cheaper at a lawn sale than on the Web, but they still have some pretty cool ones.