From what I can see, the resellers (Ticketmaster, Stubhub, etc.) bought all the tickets and the event was sold out the first day. Good for Liberty Media because they can say they have a sell-out. Since I'm only a couple hours away, some buddies and I wanted to go. We've been monitoring prices for months. At one point, even Friday practice seats started at $900. Raceday? $1800-$5000 each. We finally gave up planning. Friday morning, those $900 seats were down to $100. Of course there are tons of unsold tickets for today right now and they're down a bit but still $600 and up.
I get it, they are after a different customer these days.