Thanks for the feedback. We are pretty sure that the SP is used only to prime the price, as a template and leave no further breadcrumbs.
the challenge we have is a bit odd. Their ""promotions"" apply to certain customers and aren't time-bounded. At this point we think Price Level will do nicely, since that datum is stored in the detail line. Now we can run reports for the month showing rollups of IM items within each Price Level, simplifying their adjusting JE's for promotions and use taxes (items given away), and also by Influencer (customer).