A seller sent me ticket master tickets before I paid for them on ebay. Is there legal action the seller could take against me if I don't pay?

The seller can sue you for breach of contract.  She has the right to get the agreed purchase price, plus any fees she paid because of the check bouncing.  She may even be able to trace the funds you receiived for the tickets, and get your profits as well.  If you are believed when you say that you didn't intend to send a bad check, than you probably won't have any criminal liability; if not, you could be charged with crimes relating to theft and knowingly writing a bad check (not sure exactly what the charges would be in Arizona.)