I’m surprised by all the faff comments as I find them super easy to work on. you dont need to change the bearings, a full clean & regrease gets them back to superb condition. a few allen keys & you can pull out the axle, access to the bearings & its easy to clean the ringdrive to keep it free running with no drag.
if anything the r45 road hubs are very lightly greased & have exceptionally low drag. I put a little more grease in, so while they roll a little slower, they require less service intervals.
yes they’re expensive brand new. but if you shop around you can get full mavic/stans wheelsets 2nd hand for £300 & sometimes a lot less. thats what I did.