...I found all 8 several months ago for $175 and replaced them all in about 2 hours. Once your coils start going bad, they seem to drop off like flies.
I just ordered 4 coils/boots from ebay, new with a 3 month warranty for 10.50 each, following a link from another thread about COPs. I hope that's not "too good to be true" but thought I'd take the chance.