You want to test-drive a domain before you decide? YES, that is possible for serious entrepreneurs that want to start right away, for free, for 6 months. We want you to be sure.
You want to pay next year - 2020? YES, that is simply a question of negotiation!
You want to pay in installments? YES, you can pay the full amount in equal payments spread over an agreed period of time. You can use the domain(s) meanwhile and make money meanwhile with the domain, eg with your website/online store, however ownership will only be transferred after everything has been paid in full.