"Mercury SGD is our dedicated communication device, approved by Medicare and other insurance programs as a speech-generating device." http://www.assistivetech.com/p-mercury.htm Approved by medicare for over $7000. This is what I mean. If you look at the big picture, there is more going on than what you observe in prices and such. Such prices would not be even thinkable without the fact that it's "covered" which means some people will have them, most will not, and if the market really was free then the prices would be dramatically lower. -- Doug
