For what it's worth I just went and checked out a good majority of "high end" arrows ranging in price from $59.99-$231.99 and what I found was that the average for the straightness tolerance for all of these arrows is +-.003" with .001" being the best and .005" being the worst. So, there is definitely more than just straightness that goes into an arrow being higher priced. Being that the other factor is spine consistency I think it would be worthwhile to look beyond the .00x" difference in straightness and be sure to get arrows that will have consistent spine.