[sirmaru]

I have a Wish List of 44 books at the Sony Store all about equally of interest to me. They range in price from $ 7.59 (The World's Religions) to $ 67.43 (The Branch Davidians of Waco).

To value them for purchases I've entered all titles in an Excel spreadsheet showing: Name, Price, Size (Mb) and Price/Mb.

Then I sort them by Price/Mb. Now they range in Price/Mb from $ 0.96 (The Singularity is Near) to $ 77.26 (Capitalism and the Jews).

I willl buy the cheapest Price/Mb first and then read them in order adding new books as I hear about them and resorting.

My theory is that I am paying for the most reading time per buck. Thus, Price/Mb is a fair value to decide on purchases of books of equal interest to me.