How much does it cost to buy Winnie-the-Pooh rights?

I'm curious, could you elaborate on the financial implications of acquiring the rights to the beloved character, Winnie-the-Pooh? Specifically, what sort of financial outlay would one need to consider when pursuing such an endeavor? Are there any potential hidden costs or factors that could significantly impact the overall expense? Additionally, are there any recent examples or benchmarks that could provide a rough estimate of the cost involved in such a transaction?