The answer depends upon where you live, the complexity of your surgery, and the practice that performs your procedure. If you live in the U.S. most insurance policies will not cover the procedure....
A vasectomy reversal in not, unfortunately, available on the NHS. So therefore it is important that whilst price is important, that the surgeon's experience is considerable as the more a surgeon does...
I would assume lots, but f you have good insurance, it won't be as bad. But, the visits themselves are pricey. Not to mention actually giving birth to the baby. Hope I was helpful.