Erm, sorry, what's this? Glasses instead of monitors?
Yep. HMD= Head Mounted Display
Here's a number of HMD's we had available in the past:
VRealitiesThe closest "affordable" HMD with a high resolution has been the Visette 45 SXGA with 1280x1024, but their 3D package price has gone up to family car level. Sony's HMZ-T1 is expected to cost about 800$, the Cinemizer 720p around 700$? No word yet on this one, but maybe they can manage sub-1000$ price. With 10% see through, it might be the one for pit builders.