Стать регистратором ! как ?

Мало заплатить деньги, нужно соблюдать требования ICANN, подробнее тут http://icann.org/registrars/accreditation.htm

для зон .net .com .org, если я не ошибаюсь, около 50000$

Шкурка выделки стоит? :)

вот и пытаюсь выяснить ))

для каждой зоны я правельно понял

По ссылке всё разложено по полочкам в подразделе "Becoming an ICANN-Accredited Registrar".

To ICANN:

- US$2,500 non-refundable application fee, to be submitted with application.

- US$4,000 yearly accreditation fee.

- Variable fee (quarterly) paid once you begin registering domain names. This fee represents a portion of ICANN's operating costs.

- Transaction-based gTLD fee (quarterly). This fee is a flat fee (currently $0.25) charged for each new registration, renewal or transfer. This fee can be billed by the registrar separately on its invoice to the registrant.

- Please refer to the ICANN Budget for additional details about invoicing, including options for relief and fee caps.

You must have:

- US$70,000 in working capital requirement. THIS DOES NOT NEED TO BE PAID TO ICANN; ICANN requires only that you demonstrate (by submitting an independently verified financial statement) that you have at least this much liquid capital (cash or credit) before your ICANN accreditation becomes effective.

В RU можете с этого начать - /ru/forum/153377

Попробуйте сначала себя на ниве ресселинга, а потом можно и о том, чтобы стать регистратором думать ;)