i would shop around a bit more

there are probably other places than mania that you could get a quote from, such as forum sponsor wholesale suspension. as they say, it pays to shop around, altho in my experience mania were the cheapest at the time.
i have found my suspension to be quite a bit stiffer and harsher since fitting the superpro bushes, altho i also fitted tein superstreet coilovers at the same time. i think the extra harshness is probably more due to the coilovers, as others who have fitted the superpros to stock suspension have told me that they noticed no extra harshness, juts a tighter, better car. overall the car feels much tighter and controlled, the old bushes were worn out and felt sloppy in comparison.