Yes, Herringaid, I feel your pain--and your hope also! I, too, began buying when price was about 5 cents a share, pre-split, bought more at around 3 cents and "averaged up," then failed to sell any when it hit 27 cents (equivalent to $54 after splits) for about 2 minutes Thanksgiving weekend of that year or the next. I bought more when it dropped to a "bargain" price of 21 cents ($42 after splits!) But I held on and added more, believing in what I was hearing about the technology, then sold about half my position just before the first reverse split and began buying back after the subsequent price decline. .
Since then I have continued to add but done a little trading, selling some on spikes, though not nearly enough. Not sure what my average is, but probably very close to your $5. I was encouraged enough by the info on the CC that I bought a thousand shares at .795 yesterday at open. It has been a bumpy ride so far, with probably a few more bumps to come.
The really ironic thing is that I had a much larger position in FCEL which had gone from .30 to a dollar in a few weeks, before pullback to .80s at end of day Thursday, and I was hoping to sell some at around .90 plus on Friday and add to SGLB. Wouldn't you know that FCEL dropped more yesterday and SGLB was basically flat, so they closed within about two cents of each other! That's why they say that "traders die broke."
I do believe the next few months will see our patience rewarded, but none of us can know for sure, as Yogi Berra said so much more elegantly.