If you can find a pair of eyeglass frames that you like and need prescription lenses (these are usually the most expensive aspect of eyeglasses), you can get really cheap prescription eyeglass lenses at www.replacementlensexpress.com. You can get single vision for $25 and then add a sunglass tint for just $12, and they do ANY COLOR.
The delivery time within the states is usually 2-5 days (they are made in Connecticut).
They do stock eyeglasses, but they aren't up on their site yet (old store, new to the web) so if you shoot them an e-mail telling them what type of frames you're interested in, they can sell them to you at wholesale. You might even want to send them the link to these glasses and they can tell you a price.