I personally don't know how many shaves between honing but have read that others get around 3 months worth of shaves baring any damage. If you are only using one or a few razors you should be able to extend the time between honing with CrOx or diamond spray/paste on leather, canvas, hard felt or balsa wood. Again, if you are only working with one to a few razors a barber's hone is all that would be needed for a long time. With a Barber's hone a few laps is all that is needed. If you have money to burn or are just interested in the honing journey you can get into the Norton, Naniwa, Shapton and or other hones.