I was looking at the shoes on David's Bridal for today's 30 Day PIP Challenge and I saw these and thought of you.... they're not *exactly* what you had wanted but I think they're close and waaaay more affordable!
http://www.davidsbridal.com/Product_Sparkling-Glitter-Platform-Sling-by-Coloriffics.-Gala_Buy-Online-Accessories-Shoes