Hi Adam.
I too track PC Price per share in each of my programs. It keeps things in perspective.
I've also given thought to 'adjusting' the program somehow to account for long term price appreciation. I think one simple approach would be to simply shift Safe or Minimum % towards the Sell side (probably only 1 or 2 percentage points). I've not pursued the idea much however.
Thinking about this did remind me of the following...
Many years ago, I was a member of an investment club. This was in the days before personal computers. Anyway, we used the standard NAIC logarithmic charting forms and would 'predict' the 10 year price appreciation along a straight line (on the log chart). We would then bracket the line by about 10% on either side. We had decided then to buy some more if the price dropped below the lower bracket, and sell some if it breached the upper line.
I wonder if having been exposed to this concept helped me understand what Lichello was talking about on his informercial a few years later?