We have updated the "Upgrade" page, so it will be hopefully easier to understand for new members.
There have been also few slight changes, such as free members can withdraw now every 7 days, instead 14 days. Also few commissions have increased slightly and few other minor changes.
You can check out all details from Upgrade page yourself.
Also we have points system now as you can see from upgrade page and you can convert points to your purchase balance (from your account page, under balances).