Why is the price of vacuum glass higher than insulator glass?

(China Glass Network) As the reasons of more complicated processing technique, more expensive raw material, and smaller production scale, the vacuum glass is much more expensive than insulator glass. But vacuum glass has better performance than insulator glass. Using vacuum glass has the following good aspects:
1. Good performance of heat insulation and heat preservation. Using it as the window glass, it can keep the room warmer in winter and colder in summer.
2. Good performance of sound insulation. It can prevent the voice, and achieve the quite environment.
3. As the good performance of heat insulation, so even lower temperature outside, the window glass is not easier for dew condensation. It can keep the clear of sight, no need to clean the window glass.
4. Reduce the energy cost of window glass, and reduce the cold condition fee, and save the energy.
As the above, the insulator glass is better for personal, country, even the earth.