How do i report the shipping costs and fees i paid for my personal item sales that Ebay submitted a 1099k for?

When you report your 1099K in TurboTax, check the box This amount in box 1a is too high or includes some personal transactions.

To report your 1099-k form:

1. Open your return
2. Go to Federal
3. Go Wages and Income 
4. Go to Other Common Income Tax refunds, 1099-G, 1099-NEC, 1099-MISC, 1099-K
5. Select start next to Form 1099-K

For more information check, Form 1099-K.