In anticipation of a research firm, Google Glass can be sold for only 300 USD when released later this year. This is the price much cheaper than the Glass version for developers today, which sold for up to 1500 dollars.
Retail price is the research by Topology Research Institute of Taiwan launched, is not official information of Google, so we can only see that as a reference.
Topology Research Institute predicts Google Glass prices based on the prices of materials (bill of materials - BOM) component products. Specifically, a small projector inside cost about 30 to 35 dollars. This projector screen by the company on Taiwan's Himax Display is produced. Late last July, Google announced it acquired 6.3% stake in Himax Display, a step aimed towards mass production telescopes.