@christner
Assuming that you are in managed payments (as all sellers are now required to be), your full payouts will be deposited into your checking account. Any charitable donations are due 3 weeks after the sale, and will be collected from by PayPal Giving Fund. So you should expect that your 1099-K will include the full amount received, and you will have to account for the charitable donations separately.
https://charity.ebay.com/terms-and-conditions/
"If you have not made your donation by the due date, you authorize PayPal Giving Fund to collect the donation automatically using your donation payment method on file with eBay. If your donation cannot be collected automatically (for example, if you are a managed payments seller) you will receive an invoice payable to PayPal Giving Fund requesting payment for the donations due."
What is included in the 1099-K:
https://www.ebay.com/help/selling/fees-credits-invoices/ebay-form-1099k?id=4794#section2
More info about selling for charity:
https://www.ebay.com/help/donating-ebay-charity/default/buying-selling-ebay-benefit-nonprofit-organi...
https://www.ebay.com/help/policies/prohibited-restricted-items/charity-listings-policy?id=4286&st=12...
