Never played mtgo thinking about trying but had a question

Like the title says I've never played mtgo Ive played paper magic for 8/9 years. I have around 10-12 sick commander decks and one budget modern Ruby Storm deck around $250. I would like to inquire how expensive it would be to make my decks in mtgo, my prices ranging from $200-$800. I've heard they have a subscription of some kind, does it give you access to all the cards? That would be sweet as hell. Thank you very much everyone