"bit pricey", the consumer stuff from Vusix is somewhat sensibly priced but I have no idea how well the see-trough actually works on them (they're designed for watching movies not for HUD).

http://store.vuzix.co.uk/euro/acatalog/Wrap_920.html

And stuff designed to be usable as HUD is priced for the military and other specialist organizations:

http://www.inition.co.uk/inition/pro...e&SubCatID_=15
http://www.inition.co.uk/inition/pro...0&SubCatID_=15
http://www.inition.co.uk/inition/pro...3&SubCatID_=15

I have been waiting for ten years for reasonably priced properly HUD-capable wearable displays and while the specifications get better the price does not get much nearer the sensible range.

Edit: Some more HMD geek pr0n: http://www.inition.co.uk/inition/products.php?CatID_=8