You need to compare the 1099 from Ticketmaster to what you received. The Gross Income reported by Ticketmaster is the sale price (net sent to you PLUS the 10% fee) AND the buyer's fee. The buyer's fee is not a set amount or percentage.
Ticketmaster is reporting the net amount, seller's fee AND the buyer's fee.
You can go to 1099k.ticketmaster.com and download your 1099K as well as a list of transactions they deposited in your account for the year.
When I added the seller's fee into the cost it brought the net revenue down to almost zero.
