Magic The Gathering Online : Worth it?

[Bells]

I've been out of Magic for years now, i think it's been like, maybe 4 or even 6 years since the last time i ever played a match at all...

But every now and again i see the online version in the corner of my eye, and it always gets me curious.

Maybe just cause the aspect of a Collectable cardgame with Thousands of options and nearly limitless strategies really appeals to me... but the cost point always seems too damn high.

So, i'm pretty out of the loop, and i'm not really sure how stuff works nowdays... from what i understand, now, if you want to play online you need to buy a client, that gives you 100+ random cards to build your decks, and you can play freely, but if you want more cards you have to pay for the boosters and decks the same value you would for the actual physical cards... is that right?