The Grado HF-1's were a special edition Grado made especially for Head-Fi.org, and was sold worldwide through TTVJ.com, one of the sponsors of this forum, for I believe $200 USD.
It is said that the HF-1's are a modified SR-225, and the wooden button represents the wooden air chamber that holds the drivers. The price of $330USD doesn't seem out of place, with most sales on this forum averaging around that price.
One thing of note though, there has been some threads about a scammer selling Grado's on eBay, that he/she either modifies with a cheaper driver or doesn't deliver at all. The scammer also happens to be pitching the HF-1's, so be forewarned. The best way to get a HF-1 in my opinion is to get it off the Forsale forums here, since this is where it all started anyways.
As for pictures, you can find tons of them here on Head-Fi. Just search for it.