I bought four tickets to a concert on craigslist. Then I sold two of them on stubhub. I later learned the tickets might be fake. I immediately notified stubhub. I was told seller's agreement is I am liable for 40% of what I earned on sale or full replacement cost (based on market rates) for new tickets, which would be double what I made on sale.
I sold in good faith, not knowing they might be fakes, so is there anything that protects me from having to pay more money than I earned? I will happily refund the entire amount I was paid.