Hi Joe,
A local motorfactor got them for me, around £95 I think. However they look exactly the same springs as Tom fitted, so it looks like Gmax are the exact same springs and could well be cheaper.
They have reduced the often busy ride that you get in a Micra with no real penalty in ride comfort, along with the removal of the TB mesh the car has been transformed, I'm chuffed to bits with it now, I swear it has gained about5hp from that TB mod.
I was sorry to hear about your car, I'm glad you got out OK. Take it easy with the white one.