How much does Cosmos usage cost?

I am new to Cosmos. It sounds very interesting.

I have a question regarding the costs of Cosmos.
How much does it cost to create and run a blockchain over cosmos? Beginning-, Running costs, variable, fixed? or is it free?

Thank you

If you know how to do all of it, I imagine it shouldn’t cost much but you need to have validators or let the hub validate your chain. I believe this feature will be released with the stargate update.