Glad you liked my idea, -although the idea is what my professor taught us to do when doing web proposals.
I did a web site and we (the client & myself) found a nice graphic from a popular image site that we both liked, and the royalty release for use of that image was a paultry $50.oo for 'shared use' (meaning that the site will continue to sell the image to anyone else at that price), OR the dedicated ownership price of that single image was several hundred dollars, meaning that WE would then own the image and the site would no longer be selling this image. -Essentially, we'd have purchased the exclusive rights to that image.
We elected of course to just let me use my digital camera and make our own image, which was essentially a free service I did for the client because it is just basically point-and-shoot and download to pc, edit with PhotoShop, -and voila!. My images wasn't as nice as the professional one though, but it was ours, it was acceptible, the price was right and there was no copyright concerns.