that is a fair price. not great, not bad. and i did the research to back that up. i looked for months.
choose your size first and foremost...then buy. that is about the same exact setup i have now. except i am running 245/40's in the rear. and i have widened fenders all around. i ended up finding a set (4) of 8.5's for $425, but somewhat washed out when i could not find a good enough deal on the 7's i needed for the front. had to cough up $600 for those and sold the pair of 8.5's for around $300. you win some, you lose some. i got what i wanted in the long run though.
as i understand it 8.5's can fit with some grinding though. the benefits of not going staggered are obvious though. not only am i staggered, but i have directions too. at least i have one less thing to do in my life...rotate.