Ubercart Fee lets you add additional fees to Ubercart Products. Fees are configurable at both the product class and the product level. Each fee appears as an individual Line Item in your Order.
#D7CX: The managed_file element provide by core File module has the same functionality and this module will be discontinued. Migration is as easy as turning on the File module and changing your API slightly as both are based on Drupals {file(s)} table.
This module provides two new form elements to assist with files that are stored/updated in Drupal's {files} table.
Subscribe other people on your team to posts and comments as you are writing. This module provides a nice user interface to create subscriptions on the fly for other site users.
Note that by using this feature, users can create subscriptions for other users, so this is mainly intended for small teams on which trusted users can decide which other members of the team should receive notifications about a post or follow up comments.
It can work with Organic Groups when enabled, restricting the selection to other members of the active group, or function independently, allowing the subscription of all other site members.