If you want the absolute best to win the climbing competition, that's a viable strategy and totally worth the money for.

But for a casual climber like me whose best grade is 3級(Japanese grade standard, equivalent of 6a+/6b or V3) and climb once per week in a indoor gym, it's a diminishing return.

I want my shoes to be durable enough for at least 9 months. The resole is cheaper but necessary effort for the resole(bring shoes to the resole service, negotiating how I would like to be resoled) is a quite hassle for me. So I'd rather buy a new shoes.