I, also, simply use a hammer and some make-shift plumbing fittings, a bolt, a slight film of grease (on installation), and a small bottle propane torch to replace bearings.
I know it sounds a bit crude, but, I have probably done 11 or 12 that way and never had any problems. Usually get right at 180k miles on the Mk II bearings.
Machine shops in my area have a $50 minimum charge. Right now, I need groceries instead!!!!!