With many Business selling on Ebay as a way to avoid paying taxes, the government passed laws to force Ebay and similar sites to close that loop hole.
And now, if you sell more than $600 of grandma’s old crystal or your old Star Wars figures on Ebay/FB Marketplace/ect, they will send you a 1099K so you can pay your taxes.
One more form to go to the tax person!
Of course, you should have been reporting those earnings anyway. The same goes for garage sales!
https://money.com/tax-1099-k-600-ebay-etsy/