Here is the website for the Ann Arbor skate park art show/auction. You can see past entries, event info, and, if you are sagacious enough an internet wanderer, you might even find my name listed as a participant. :-D
Saturday, May 15th!!! Be there, or be laaaaaaaaaaaame. (full disclosure: I'll be lame)
I have it from two reliable sources that my deck sold for $150 on Saturday! :-D!