How do i enter personal items sold on ebay as a Deduction?

I got a 1099-k from paypal and i only sell personal items on ebay. 

 

In income, self employment it ask about the value of my inventory at the beginning of 2020 and end of 2020

Would i enter the original price i paid for the items i sold on ebay? and then $0 for the end of 2020 since i sold them?

 

Am i even in the right place? 🙂

 

Thanks for the help.