The cost turns away most people, however there are some situations that might help you justify it (I have no personal experience with these):
You could buy it as part of a group to greatly cut down costs. Most people would only use it occasionally, so this is possible.
If you have a large...
If you are merely looking for a way to store eggs at this point, then there are two other good methods to consider:
Freeze-drying: Very effective and long lasting. Requires an expensive ($1000+) machine.
Freezing: Works well if you have the freezer space to spare. Scramble and store in...
Water-glassed eggs are supposed to keep for 18+ months. I keep them for 9-10 months as I save them during the heaviest laying in the spring and use them over the winter when the hens rest. Commercial egg producers use a very artificial environment with temperature controls and extended light...
I've been doing water-glassing for 5-6 years. Minor cracks are expected in some eggs (~10%). When I tried them, they were nasty tasting, but maybe the membranes were also split, so I generally give the advice to toss those. The other, whole eggs aren't affected.
If you do decide to use...