Posted for Bill Hogarty <billhogarty@direcway.com>:

For Thomas Low -
 
 Tom - FWIW, there was  an outfit advertising a small HUD for experimental
 use in either Sport Aviation or AOPA about 5 or 6 years ago.  If I recall
 correctly, it was in the $ 5-6 K range.  I dont know  anyone who used it
 tho.  Bill Hogarty