The whole thing is scam and a sham. The first time I got a ticket in 2001, I went to court, and when I got up there they said they could lower my 67 in a 55 to 60 and it would only be two points or something like that. They explained it to me and said it wouldn't effect my insurance or driving record.
When I got another ticket, in 2010, I went to court and the attorney asked what I wanted to do. I asked if he could tell me my options, like the first one did, and he started completely scowling at me and directed me to some assistant to get a continuance. I was watching the people go ahead of me, and I could just see him getting his rocks off, when he was "giving them a break" with prayer for judgement, or whatever else they were so inclined to accept from his majesty, and they were all happy and dancing. I guess I completely intruded on his power trip.
Oh yeah, all those letters you got are from the ambulance chasers. They get a daily copy of the blotter from the day before and bombard you with offers, hoping you will pick them and pay them to do what you can usually do yourself. It is funny, because they talk to you like they are doing you a favor because they know someone. In some cases, I am sure that is true. But unless you are a habitual speeder, just showing up and asking for "forgiveness" will get you off the hook as far as points and insurance problems. If you are not local, I imagine your best bet is to just pay the attorneys instead of going through the added expense of coming back and then paying the fees.