Kings box office is not the best way to buy tickets. They have picked over inventory and usually have fees.
best way is to partner with an original season ticket holder.
second best way is the Ticketmaster site with the 'resale button' clicked - unless you trust a craigslist person or buy from me
I find that usually stubhub adds fewer fees at checkout than Ticketmaster, but it can vary - and the resale prices are better to start with on Ticketmaster for the most part.