Just for kicks:
Add up what it would cost to replace your rulers at full price.
Add up what it would cost to replace your thread at full price.
Add up what it would cost to replace your cutting mats at full price.
Your scissors, your pins, your templates, your iron, your shelving, your totes - - -
even what it would cost to replace at 1/2 price?
I don't even want to think about what I've invested in sewing stuff over the past 50 years.