What is the average cost of a timeshare per year?

I'm curious to know, what is the typical annual expenditure associated with owning a timeshare? Is there a standard fee structure that most timeshare owners can expect to encounter, or does it vary significantly depending on factors such as location, resort amenities, and the terms of the ownership agreement? Additionally, are there any hidden costs or unexpected expenses that timeshare owners should be aware of when budgeting for their annual costs?