As expensive as a dozen of eggs have gotten over the recent months, a good way to extend them is to add some dry powdered cafeteria eggs or Army powdered eggs or other if you can get them! Sometimes you can find them at the Mennenite stores if you are lucky enough to have one near you!
Mix a little and add it to regular scrambled eggs to make them go farther and they taste really good!
Source: myself :)
You can also use powdered eggs in just about any recipe that calls for eggs; reconstitute them first (should come w/ directions - I think its 2 tbls egg to 1 tbls water-equals 1 egg) and continue w/ recipe. They are hard, if not impossible, to find in regular grocery stores tho.