Anyone who has worked with me for more than a few minutes has heard my rants on costs and ROI (Return on Investment). Everything I purchase or do for my library has me spinning into mini ROI calculations. Sample obsessive calculations:
-Program cost over number of participants (Watch my blood pressure if I have to attempt to divide by zero!)
-Item cost + Cost of processing + Cost of selection time over number of circulations.
-Number of circs I can squeeze before a board book is completely disgusting.
-Item cost vs how much work it is to order said item (I am defining work in this context to the following: bad website, poor invoicing detail, annoying sales/customer service, etc.)