Buying points

How do you gain points? Can you buy points? Can you use points as currency?

Using points, including using points as currency, is described in Using points. How do you gain points? should be listed elsewhere. This page is about buying points. The Ubercart userpoints module is an example.

Please add more and your experience.

Ubercart

We use the package Ubercart Userpoints, at http://drupal.org/project/userpoints_ubercart, containing four modules for different uses. Here are the descriptions from the four .info files.

name = Userpoints Award
description = Interfaces userpoints with Ubercart, so users can get points for purchases.
package = Ubercart - Userpoints
dependencies[] = userpoints
dependencies[] = uc_order
dependencies[] = uc_cart
dependencies[] = uc_payment

name = Userpoints Discounts
description = Interfaces userpoints with Ubercart, so users discount final price with points.
package = Ubercart - Userpoints
dependencies[] = userpoints
dependencies[] = uc_order
dependencies[] = uc_cart
dependencies[] = uc_payment

name = Userpoints Payment
description = Interfaces userpoints with Ubercart, for the purpose of making purchases.
package = Ubercart - Userpoints
dependencies[] = userpoints
dependencies[] = uc_order
dependencies[] = uc_cart
dependencies[] = uc_payment

name = Userpoints Product
description = Provides necessary modifications to let a user earn points when a product is purchased - AKA: Buying points
package = Ubercart - Userpoints
dependencies[] = userpoints
dependencies[] = uc_order
dependencies[] = uc_cart
dependencies[] = uc_payment

Commerce

There is something equivalent for Commerce.
see http://drupal.org/project/commerce_userpoints