Is IOTA free?

Could you please elaborate on the matter of whether IOTA is free or not? I'm curious to understand if there are any costs associated with acquiring, storing, or using IOTA tokens. Additionally, are there any transaction fees involved when sending or receiving IOTA, and if so, how are they calculated? I'm interested in knowing if there are any hidden costs or ongoing expenses that I should be aware of when dealing with IOTA. Thank you for your clarification on this matter.