flash-based online photo gallery

This is more of a discovery effort than a bona-fide project, so please commit your time accordingly. I'm interested in having an online photo gallery built with Flash, much like the one at http://www.pentaxphotogallery.com. Ideally, it would allow me to upload photos to a directory on a server without having to edit an XML or other text file; however, this feature isn't absolutely necessary. I would also like to have an "about", "contact", and "links" page I would be able to edit with a text file. Initially, the gallery would only be for display, but my intention is to eventually sell photos through this tool, and if possible, I would like to use the same provider for that modification as well. I'm interested in getting an idea of the price for something like this; if it is within my budget to pay for now, I would like to start the project immediately. However, if you believe it will cost more (or considerably more) than my posted budget, please indicate so in your post so I may plan accordingly. I would assume someone has already built this type of tool and could do some modifications to suit my needs; however, I've been wrong before. :) Feel free to post questions as well, and I will reply in a timely manner. Thanks!