What will I get? Do I have any options?
Assuming you choose not to contest the notice, most likely 3 points and a £60 fine. Your licence will be endorsed with code SP30. This will stay in force for 3 years from date of conviction.
You must declare this to your insurance company. Given your record it should have no effect on your premium.
Couple hundred quid fine?
REALLY?
£60 tops + costs.
Not necessarily. £60 is a starting point, assuming the OP chooses to accept the conviction and not contest it. It can also depend upon the circumstances surrounding the conviction, and how the evidence was gathered.
they’re not obliged to show you any until/unless you go to court.
Not true. The notice will state this but in reality, if you are notified of a pending prosecution, the accused has the legal right to see all evidence that will be presented to bring the prosecution.
Just as an FYI, not being aware of a speed trap or “not seeing it” isn’t a valid defence – there’s a speed limit so you should be within it and its tolerances.
There are Home Office guidelines which state that speed traps must be plainly visible and set out in a certain fashion with adequate signage. In practice this rarely happens, but again it cannot be used as a defence. If you feel that the trap was unfair or badly laid out the only recourse you have is to write to the Home Office about it. They will then consult with the authority responsible, slap their wrists and tell them not to do it again.