Get your taxes done using TurboTax

1. In the Wages & Income section, scroll to Less Common Income
2. Choose Miscellaneous Income, 1099-A, 1099-C, and Start
3. Choose Other Reportable Income, and Click on Yes on the Next Page
4.  In Other Taxable Income, Enter 1099-K Personal Items Sale, $1000
5. Continue and Add Another Miscellaneous Income Item,
6. Enter Personal Items Sold Reported on 1099-K, -$1000

This will result in no taxable income.