I just got mine today. I too felt like the price would be a little high! But after Taking it out of the package that resembled a Windows 7 package, I noticed that it did feel very thick as compared to other SGP screen shields I had before.
The install was easy just like the other SGP screen shields I had before, and I have had all of them. Clean screen of iPhone 4S, remove dust particles, peel away screen shield and line up and apply. What was different was that the shield was so thick that I actually had to use the included squeegee to apply pressure to make it stay. Other SGP screen shields seemed to go on easier. This has got to be the most precise screen that I have ever had. When I got it aligned correctly, it is a perfect fit!
Unlike the ultra crystal, it does not seem to attract finger prints and seems to wipe away easier!
According to the SGP site...
"The Ultimate Class product uses an innovative new material called, GP73, GP73 provides superior touch and offers enhanced protection. It is the premium LCD protection film. Researched and developed in Japan, GP73 provides great material for LCD protectors through excellent surface hardness and outstanding light transmittance."
After having this on my iPhone 4S, I would have to agree with the above!
Lastly, I ordered mine on Sunday afternoon and it was $24.99.
Today I go back to SGP's site and the price has increased to $27.99!!
It's expensive, it only comes with one screen, but it seems to be the best screen shield I have ever had!