i think i'm the only guy who still dont understand a few obvious things

1. So subscription for Graal is only $15 for a lifetime?
2. In that $15 can we play on 2001/2002 or just classic?
3. If the answer to question 2 is no, then how much do we have to pay to play on them?
4. Can you still use the old method to register? (paypal)
please clear up these things