These sites all have e-commerce functionality to some degree. Some just have donation capability and others have full fledged shopping carts.
Drupal's Übercart suite of modules provides a good solution for doing online business. For e-commerce in WordPress I like to use the WooCommerce suite of plugins.
This is the website for the Fernie & District Arts Council.
The site is used to promote Gallery exhibitions and events. The site has an integrated membership management tool that is used to sell memberships, event tickets and gallery/studio rentals.
This is a very simple html e-commerce site that sells only one product.
This is one of the few sites that I a have done that I take credit for the graphic design. The design for this is minimalist bit I am happy with it.