Skeletek wouldn't be my first choice if you were sticking servers in it (not any of the two post at least). If you have a bunch of gear, which it sounds like you do, then I would take a look at Craigslist and Ebay (for local auctions for pickup ideally to save a bundle on freight) as suggested. I would also contact any local companies that specialize in asset recovery/management, we've had to purchase server cabinets in our shop on a budget for other locations that need a single cabinet and have always been able to pickup a cabinet for ~$50.
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You'd be surprised at the cool racks you can get when businesses upgrade/close - check ebay/craigslist.