See bottom of post for update.
Elizabeth and James' button detailed wedge sandal retails for $350 at Saks Fifth Avenue.
Rosegold has a very similar wedge that retails for $168 at Urban Outfitters and comes in grey (pictured) or black (also seen on the blog In their Closet). Click on the photo below to purchase.
Again, Chloe over at The Chloe Conspiracy found these No. 704b Vern wedges which retail for $109.95 at DSW. They come in taupe, black, or grey (limited sizes left in the black and grey). Click here to purchase.
*Update - 1/31/11* - If you missed out on the DSW version (now sold out), check out these wedges from Miss Me. They retail for $45.95 and come in a couple of additional colors. Click on the photo below if you're interested in purchasing.