Self employed

Hello, 

 

I do not get the earned income credit, my w2 wages are too high. I made a total of around 4000 this year, by the time I subtract ebay fees, PayPal fees, shipping costs, and a few shipping expenses, I believe my profit was around 2200. I want to make sure I’m doing the right thing with these personal items so I thought without receipts the irs could not question an amount of zero. If I truly should not put zero, how do I validate the cost of these used items?