Even cached input is only half price with openAI (and they don't even offer it for o1-pro).
Further we also aren't counting input here which can get long since it includes the previous output, which for the last request will be 33,750 + reasoning + any prompts, which will increase your cost quite a bit there.
But yes that is more reasonable than I'd expect I must admit, but I still think it needs to be at least an order of magnitude cheaper to compete against the other models out there.
I'm not sure I know a lot of employees who would allocate that sort of constant funding to a consumables tool for an employee, given that's your usual monthly cost for a typical saas product.