The more I shave with the Skinguard the more I like it. Well into double figures on the number of shaves, around 15, stopped counting after 10. I would say that you could get a minimum of 25 shaves and probably more, which offsets the high cost of refills.
I have had no issue getting to 25+ shaves with the SkinGuard I always get the carts for under $2 dollars which is a fantastic value for money