I always consider the labor cost of my time when doing repairs as I could be doing something else that saves or makes money. For that reason I view it as more cost effective to purchase the entire arm rather than just the bushing. And in cases like when a suspension part wears out after 75,000 miles it is likely the rest of the suspension is in poor condition so rather than tear it down several times it is a good plan to purchase a suspension rebuild kit. That will save labor hours and any worn parts won't be causing premature wear on the replaced parts.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas