At the bottom of this page, you have a section called "by the numbers" which shows the estimated print cost of the items included in a base package.
Additionally, if inside L5 you click help -> about it shows the last package you've purchased.
What if you were to include an additional field that shows the "Estimated Cost of Equivalent Print Resources" for everything you've purchased... All that data on a book by book basis is included in a DB somewhere... I imagine it would be relatively simple to include, and may be a good tool for sales:
Salesperson: "I see you've purchased 250,000$ in print equivalency books from us for the low price of 1500$, what I'm offering you today is another 78,000$ in print value books for amazing price of 800$...
Something like that... Plus it would be interesting to know what the Logos estimated P.E.V, (Print Equivalency Value) would be for my library 
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