How much is the iyzico extension cost?

I would like to use Iyzico payment service on one of my Magento 2 project (2.2 version)

How much is it cost ? It works with Magento 2 version 2.2 and you would update with magento new release?

The extension is not yet released, because I have more profitable projects right now.
It anybody wants it to be released, he can get it by ordering my payment gateway integration service.