1099-K from PayPal (tax form)

It looks like I am getting a 1099-k form from PayPal for the first time. I sold a lot of audio items last year, used, while upgrading my system and swapping things around. Obviously I am not a business, not in this for profit, and did not make money, lost money. It’s just a hobby, a costly one.

I am guessing I have to report this with my taxes. However, the form only has the gross proceeds from PayPal, not my original purchase price. How do I deal with this? Any particular section on Turbo Tax to enter these?