Let's face it as a home mechanic, you're not likely to use this tool very often as removing and installing bearings in your BB30 bottom bracket is not a common maintenance task. Nevertheless, I weighed the cost of doing it myself versus the local shop doing it and decided it was a worthwhile purchase at the sale price I paid. Solid Park tool quality and works as intended.
I've used this once to replace a PF30 BB on my Mountain bike. This is the best tool I've found for easily and safely removing the BB without damaging the frame. Worth every Penny!