Some questions before i consider buying

Is it ok when after 1 year passed that I extend my license, for example when I buy now a license and after a year version 1.x is released and then I wait with extending until version 2.x is there?

Can i switch from domain to domain as much i want without i have to pay for it like at IP.Board? (of course after removing the installation on the old domain)

And i guess i have to confess that i used localhost only a nulled copy to see how it works and if i can enjoy it after my failure of buying a vB5 license that i have now and i have so much regret of it.