No one gives a fuck about your allergies. What are they going to do make it out of wood?
If I had a nickel for everytime I heard of a person with nickel allergies, jeez, I'd have one nickel. Then Id put it on you.
Hit up slicehost, godaddy, rackspace or any other company that offers virtual hosting and try to hock 'em to them in bulk. If that fails find a startup that can't afford hardware and cut them a deal (or get some percentage)