It's not just about the number of lines of code you write or save. We all understand that. Customers consistently tell us that the primary benefit of PostSharp is not code reduction but cleaner, more understandable code. However, code cleanliness and readability are challenging to quantify. Let's focus on what we can actually measure: the number of lines of code you could avoid writing with PostSharp.
Consider reading this book: Software Estimation: Demystifying the Black Art by Steve McConnell, published by Microsoft Press.