I wanted to say good luck finding one of these. Took me a few months to find one myself. Be sure to post on craigslist as well. I offered $50 for a 2010 patch and found someone who sold it to me for $50, on these forums. RAGBRAI didn’t make very many of them for some reason, they don’t have any left, I checked.
I’m going to make sure in the future to get the patch while at RAGBRAI or order it as soon as I get home so I’m not missing any.