<human>: I got a ticket for going 96mph in a 75 limit zone, for which I am really sorry. After some research I realized that criminal speeding is kind of a big deal in AZ and will stain your record if you don't contest it. Most people suggest hiring a lawyer to try to have the criminal charge dismissed or reduced to civil, (and since I won't be able to appear in court I will need someone there to represent me anyway,) what do you guys think?
 
So I called a bunch of Arizona local law firms that specialize in traffic tickets and decided to go with one of them. But here comes this thing... the attorney asks me to pay online through his website without providing me with any written agreement?! (Unlike other attorneys I called, they emailed me paperworks to sign before I decide to pay.) It's not like I'm worried I might get scammed because it seems like a big law firm, but I really don't feel safe. It feels like once I pay, it's up to the lawyer to fight it hard or hardly fight it... What should I do?

The police officer who gave me the ticket also said I should call the court for further instructions. What might the court ask me on the phone? And what should I say? Should I try to explain my case and beg for reduced charge?

Could you distill the essence of the text into 1-3 sentences?
<bot>: 1) Need advice/ experience sharing regarding Criminal Speeding in AZ. 2) should I trust lawyers who don't provide signed agreements ? 3) Advice on calling the court.