ive been trying to build a wearable computer

I’ve been trying to build a wearable computer since forever, but I sort of got stuck because there aren’t (or I can’t find) any good HMDs (head-mounted displays) that don’t cover your entire field of vision (covering just one eye is fine, but being see-through would be the best, of course). I’ve had a Google Alert on the AirScouter for a year or so, and it seems they’re finally releasing them in some sort of product. I want one *so badly*, but they’re targeted at industrial application and priced thereafter, at $5200 :( I may be a huge frickin’ nerd, but I can’t really justify spending that kind of money on yet another hobby project…