According to a posting from the Financial Times blog, there are now at least 45 e-reader devices with e-paper screens available worldwide and several more are expected in the foreseeable future. Sriram Peruvemba, marketing vice president at E Ink, commented that the current price of e-readers has prevented the devices from becoming mainstream but the prices are falling and we could see a device under $100 within three or four years time. The drop in price along with the introduction of color e-paper which E Ink plans to introduce next year, could make e-reader mass market products in the near future.
In a related story, the Kindle Review blog recently featured a great posting with a detailed list of 31 e-book readers that are either on the market or expected to hit the market in the coming months. The posting makes a useful reference for deciphering among the e-readers and should be updated soon to also include pictures or videos of each e-reader.