Here the answer from central registry (company who own gtld):
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Thank you for your email and interest in the domain [xxxxx].[yyyyyy], it would be great to see you register the name and use the site soon.
Our registrar partners vary in price, it is completely down to you to choose one that suits your budget needs best. Many of our registrar partners charge a one off higher premium price for the first year and then every renewal after that is at the normal standard price, however some registrars do charge the full higher premium price each year. What our registrar partners charge for our tlds is out with our control. Please have a look through all our registrar partners from the link below and choose which one suits you best. If you need anything else then just let me know.
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Really? Registrar (partner) can charge yearly premium more than central registry? $400 upfront and $24/year and $400/year is completely different. First I thought someone own the domain already and trying to rent out the domain. I kept comparing prices in many websites GD, DD, EP, NS, NC, etc. I picked one the best price and checkout. No yearly premium.