Yes. You can restore previous changes made on “pages”. By default, WordPress has two post types. You can also have custom post types called anything [i.e. tickets, or calendars etc.]. The two default post types are “posts” and “pages”. Pages have a screen option called revisions which allow you to browse through previously saved pages. You can restore any previously saved post if you have the role “editor” or above. This feature can be enabled on any post type by a developer, and is enabled by default on pages.
Freelancer.com is ridiculous for “design” contests! I’m not going to say the price, because it isn’t fair – given the quality of work. These guys are GOOD. Hazem actually submitted TWO entries that were good, and was able to adjust the design when requested. If you’re looking for a good designer, I’d definitely recommend Hazem.