dont know the spring rates but i am very happy with them, not too stiff, doesnt hit the bump stops, a comfortable ride, the car is daily driven by my wife and is planned to carry our kids when they come along, and it will be fine for that.
for the supply and fitting of three full sets of springs ( took them a while to get it right, ...fussy customers lol ) and a 4 wheel alignment set me back $600
All work was done at;
Wholesale Suspension
129 Coreen Ave Penrith
02 47212112
couldnt recommend them more highly, they spent days sourcing and trying different springs until they got it to the height i was after, and still only charged me the normal price. They also fitted the rear camber arms i supplied them with for $240 on a separate occasion.