I spent 2 weeks, every night at 12am and 5 am trying to get a PP appointment for Houston as I fly out 27th. Unfortunately, I wasn't able to. Why? People have bots that scoop up all appointment immediately they open, regardless of location. They would then go online and sell them to desperate citizens for $400 - 1000, depending on your urgency and how close your trip is. I was livid. Well, seems government caught up and as of 7/22, you can only get appointment by calling. Good.
Some sellers got money for fake appointments. Others got money and never delivered. Others sold the same appointment numerous times.
If you'd like to know how serious this racketeering was, visit:
1. r/passports on Reddit,
2. Passport Appointment (FB)
3. US passport and visa services (FB)
4. US passport appointment services (FB).
I'm glad this got shut down, for the moment, atleast.
Please DON T PAY for appointment.