Go to the Pricing tab.

There you have a list of all the available packs, whether they're subscriptions or one-time, and then you have unlimited memberships.

If you want to see more information about them, click on the arrow next to the What's included text.

When you find the one you want to purchase, click on Select.

You will be asked to log in if you haven't already.

You will now see a description of the plan you're buying and the option to add a promo code and your payment info.

Click on Complete.

That's it! You will receive a confirmation email.