Buying a Bill Pay phone from Meteor Online

Was thinking of getting a new phone and switching from "Pay As You Go" to Bill pay online. I want to get the EUR 20.33 monthly option (to get the free meteor texts and talk that I cant get instores), but want to know has anyone bought a Bill pay phone from Meteor and what the process was like for setting up a contract? I heard vague details that you have to email scans of stuff.

Thanks in advance.