I found them for a good price from a shop in Los Angeles and I like the style more than the Boxster S wheels. If I sell my original wheels for a good price, I'll be able to break even on the exchange, considering that I now have brand new tires.
edit: also, the cayman s wheels will be a bazillion times easier to clean.
Yeah, no bites yet here, but that's okay, I'll put 'em on eBay or Craigslist soon to get some more eyeballs on 'em.