You’ve got your outfit picked out for the Kentucky Derby. It’s either pastel or plaid, maybe both. There’s the appropriate hat. The party invites are in hand. Red roses are a plus. Now, do you have a ticket to attend one of the biggest parties in the country? Because if not, prepare to pay big bucks. The Kentucky Derby is officially a sell out. Back when tickets were available, standing room general admission tickets had a starting price of $275. A private suite cost $135,000 to reserve to watch the Run for the Roses. If you wanted to have a seat at Churchill Downs, well, those cost a minimum …