I do not look at it as cost. I have always viewed it as investment. This is something that I can do year round, inside or outside (if you want to brave the weather). In all my time I have only had two bows that broke, but there have been many others, that have been in/out of stable, and no money lost. The only other investment I have made on bow is a wrap/string here and there. Arrows, I learned long time ago, never fall in love with your arrows, if you have one you do fall in love with, set a shaft aside for display, as the rest will be lost/broken. I decided to make my own, arrows, strings, bow as a deeper passion for the skill and a closer connection to the animals I harvest.
The investment, I have made in the money of traditional bowhunting if the greatest I have ever done. The time in the field, memories made with family and friends, the mental relaxation that comes from it. We have all hear of the "million dollar view", well I have had and hope will have more, of sitting/standing among nature, either on ground or stand, and seen more beautiful things, than most people will never get to see with their soul.
To me the hidden cost is a trillion dollars, minimum, because no amount of money can be placed on the above.
Just my opinion.