I will get a 1099-k from paypal this year. I sold all my baseball cards from the last 3 years. It was about 25k but I only made $650. I buy and resell baseball cards.

So I bought cards from 2015-2017 and needed money, so I sold most of them. I know what I bought them for and what I sold them for. Some for gains and some for loses. I will get a 1099-k because I sold about 25k and 300 transactions. Do I need Business Turbo Tax? Does the $650 count as business income or personal and do I need to fill out a Schedule C? I do have another job. This was a hobby of mine but now I needed to get money. 

So the $650 is deducting all the ebay/paypal fees also. I sold a lot of cards for a lose but still gain a little bit. Thanks