Sale of Sports Cards and expenses

[user17576364387]

Hello. My husband bought and sold sports cards online last year.  The 1099K says there were 75 transactions in total. The amount in "income" was a little over $19k.

His expenses for purchasing the cards, supplies, etc. most likely exceeded the income, however, we have only been able to pull together about $17,500 worth of expenses - there are 109 separate transactions for expenses. 

I am uncertain how to enter all of this information and if I have to enter each separate item.  I could possibly allocate each box purchased to the sale of cards, however, how would I tie in the supplies? 

Thanks!