Ribbon-tech spine, arm, and leg. The deformation layer that sits on top of the free limbs, for the shoulders, hips, and spines that have to hold up in close-up.

The Advanced Modules are paid for everyone, at any studio size. They are not a corporate tier and they are not a subscription.
If your organization makes over $2 million a year, that is a separate thing, it covers the whole toolset, and it lives on the licensing page.
A continuous surface through the torso, so a heavy bend keeps its volume instead of creasing at one joint.
Elbows and shoulders that hold their shape through the full range, including the twist that normally collapses a bicep.
Hips and knees that stay round under deep flexion, where a standard limb chain pinches.
If someone hands your animators a character built with these modules, it works, with nothing installed and nothing to buy. The deformation is baked Maya nodes.
You need the modules to build and edit ribbon components. You do not need them to use a rig that has them.
Checkout hands you straight to your download. Receipt arrives by email. 14-day refund, no questions.
Updates and Maya compatibility for the latest two Maya releases, best effort, no SLA. Selling this is a support commitment, and saying so out loud is what makes it worth anything.
Source available, nothing compiled, no license checks, no phoning home, no activation server that can be switched off. Read it, change it, keep it.
Yes. Same as the rest of the toolset. If your organization is under the revenue threshold, use it on anything you like, including paid client work, and keep it.
No. Ribbon rigs animate for everyone with nothing installed. You need the modules to build and edit ribbon components, not to animate a rig that already has them.
That is a separate question from this page. The modules are the same price for everyone. The revenue threshold is about the toolset as a whole, and it is explained on the licensing page.
No. One payment, perpetual, no seats and no renewal. Every version becomes fully open source four years after it ships, automatically.
The latest two Maya releases, best effort, no SLA. The same support promise the rest of the toolset carries.
A small add-on pack: drag its installer into a Maya viewport with the free toolset already installed (v1.1.0 or newer), and the ribbon components appear in the picker. There is no key, no activation, no account, and nothing phones home.
Fourteen days, no questions. If the modules are not what you needed, reply to your receipt email within 14 days and you get your money back.