PJ, Here is how I cost justify it. I look at it as putting down a deposit in the hopes that my schedule will align that I'll have the ability to watch some of it. Really, I'm paying for the convenience to have live drag racing at my finger tips at any point during an event. If you were to buy it now, $100/18 races = $5.56 per event. Each event has either three or four days of racing (except Indy obviously). Let's use an average of 3.5 racing days per event. That means you would pay $1.59 per racing day. If you're able to watch some racing, $1.59 sure seems worth it. If you can't, then you're only losing out on $1.59.
Here are a couple of scenarios that played out for me during the Atlanta race. Friday was dinner and date night. Girlfriend told me she would be home from work and ready to go in 30-45 minutes. 90 minutes later she texted saying she was ready. The entire time I was waiting, I was watching Friday qualifying. Well worth the $1.59. Saturday I had golf and other plans, so no live racing, so I lost $1.59. Sunday my parents came over for breakfast prior to a charity event we were participating in. We watched the first round of eliminations while we cooked and ate. Hearing the national anthem, the cars fire up, etc., it was great. My dad loved it. Well worth the $1.59.
Nobody has time to watch 10-12 hours of drag racing all day/night every Friday, Saturday, and Sunday there is an event (except maybe Alan Reinhart, lucky). But knowing I can pull out any smart device and watch live racing if a hole opens up in my schedule is so fantastic.