I'm not really sure at this point- it was three years ago when I ordered. He may have sold out at this point- I'd imagine it was a small print run, but he may still have some...? Maybe contact him on his page?
Of course ^_^ I have no way of getting to San Diego for the Convention (being in Australia and all) so I'll definitely order online. I have managed to get the 2005 and 2006-2007 but the same way. Don't see a reason to stop now XD